acidic
US /əˈsɪdɪk/
UK /əˈsɪdɪk/
- Adjective
- Containing acid
B1Moreadapt
US /əˈdæpt/
UK /ə'dæpt/
- Transitive Verb
- To change something for a different function
- To change something to fit or suit a new purpose
- Intransitive Verb
- To change your behaviour so that it is easier to live in a new place or situation
B1TOEICMoreairborne
US /ˈerbɔ:rn/
UK /ˈeəbɔ:n/
- Adjective
- Being in the air
- Transmitted through the air.
- Noun
- A military unit trained to be transported by air and parachute into combat.
- An operation involving the dropping of troops by parachute from aircraft.
C1Morealso known as
US
UK
- Phrase
- Also called; alternatively named.
- Identified by another term; synonymous with.
A1Moreas well as
US /æz wɛl æz/
UK /æz wel æz/
- Adverb
- Also; in addition to
- Preposition
- In addition to; and also.
A1Moreasap
US
UK
- Adverb
- Shortened form of 'As soon as possible'
C2Moreavian
US /'eɪvɪrn/
UK /'eɪvɪən/
- Adjective
- Of or typical of birds
C1Moreavian flu
US /ˈeviən flu/
UK /ˈeiviən flu:/
- Noun
- A type of influenza virus that primarily infects birds, but can sometimes spread to other animals and humans.
aware
US /əˈwɛr/
UK /əˈwɛə/
- Adjective
- Knowing or feeling that something exists
A2TOEICMorebind
US /baɪnd/
UK /baɪnd/
- Transitive Verb
- To cover a wound, as with a bandage
- To put pages and a cover together to create a book
A2Morebird flu
US /bɚd flu/
UK /bə:d flu:/
- Noun
- A highly contagious viral disease affecting birds, which can sometimes spread to humans.
B1Morecatchy
US /ˈkætʃi, ˈkɛtʃi/
UK /ˈkætʃi/
- Adjective
- Being easy to like, remember (of songs)
B2Morecattle
US /ˈkætl/
UK /ˈkætl/
- Noun (Countable/Uncountable)
- Cows or bulls on a farm
- Individual animals of the bovine species.
B1Morecirculate
US /ˈsɚkjəˌlet/
UK /'sɜ:kjəleɪt/
- Intransitive Verb
- To go round continuously
- To move from one person to another, as at a party
- Verb (Transitive/Intransitive)
- To move around or through something, or to cause something to move around or through.
B1Morecommunity
US /kəˈmjunɪti/
UK /kə'mju:nətɪ/
- Noun (Countable/Uncountable)
- Group of people who share a common idea or area
- A feeling of fellowship with others, as a result of sharing common attitudes, interests, and goals.
- Adjective
- Relating to or shared by the people in a particular area.
- Shared or participated in by all members of a group
A2Moreconcern
US /kənˈsɚn/
UK /kənˈsɜ:n/
- Verb (Transitive/Intransitive)
- To be about a particular topic
- To have a direct impact on someone
- Noun (Countable/Uncountable)
- Company, firm or business
- Feeling of worry or anxiety
A2TOEICMorecontact
US /ˈkɑnˌtækt/
UK /'kɒntækt/
- Adjective
- Touching or feeling something
- Noun (Countable/Uncountable)
- Touching or feeling something
- Object that allows electricity to run through it
A2Morecontaminate
US /kənˈtæməˌnet/
UK /kənˈtæmɪneɪt/
- Transitive Verb
- To make impure by adding a harmful element
B2Moredairy
US /ˈderi/
UK /ˈdeəri/
- Adjective
- Concerning or made from milk
- Noun (Countable/Uncountable)
- Building for storing milk or making cheese/butter
B2Moredirect
US /dɪˈrɛkt, daɪ-/
UK /də'rekt/
- Transitive Verb
- To tell someone in a very clear way to do something
- To show the way by conducting or leading
- Adverb
- Coming straight from something
A2TOEICMoredomestic
US /dəˈmɛstɪk/
UK /dəˈmestɪk/
- Noun
- Someone paid to help with housework in your house
- Adjective
- British informal fight between husband and wife
- Concerning your own home or house
A2TOEICMoredread
US /drɛd/
UK /dred/
- Verb (Transitive/Intransitive)
- To await with great fear
B2Moreexposure
US /ɪkˈspoʒɚ/
UK /ɪk'spəʊʒə(r)/
- Noun
- Allowing light through a cameras lens onto film
- Being talked about in the media
A2TOEICMoreflu
US /flu/
UK /flu:/
- Noun (Countable/Uncountable)
- Illness causing headache, fever etc.
- A specific instance or bout of influenza.
B2Morefor sure
US /fɔr ʃʊr/
UK /fɔ: ʃuə/
- Adverb
- Definitely; certainly; without a doubt.
- Used to emphasize a statement.
- Interjection
- An expression of strong agreement or affirmation.
A2Morefrom the first
US /frəm ðə ˈfɝst/
UK /frəm ðə ˈfɜ:st/
- other
- From the very beginning.
B2Morego either way
US
UK
- Intransitive Verb
- To have two possible outcomes; to be uncertain.
A2Moregoing on
US /ˈɡoɪŋ ɑn/
UK /ˈgəʊɪŋ ɔn/
- Phrasal Verb
- To continue doing something
- To happen (usually negative)
A1Morehost
US /host/
UK /həʊst/
- Noun (Countable/Uncountable)
- Mass; a great number
- Person who entertains guests
- Transitive Verb
- To be the sponsor of an event, e.g. the Olympics
- To lead or start a party, program, or other event
A2TOEICMoreimmunity
US /ɪˈmjunɪti/
UK /ɪˈmju:nəti/
- Uncountable Noun
- State of not being able to catch a disease
B1Morein depth
US /ɪn dɛpθ/
UK /in depθ/
- Adverb
- Thoroughly and carefully; in detail.
in fact
US /ɪn fækt/
UK /in fækt/
- Adverb
- Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
- Used to introduce a more detailed or surprising piece of information.
- Phrase
- Used to emphasize the truth of a statement, especially one that is surprising or contrary to what might be expected.
C1Morein the past
US
UK
- Phrase
- During a former period of time; previously.
A1Moreinfluenza
US /ˌɪnflʊ'enzə/
UK /ˌɪnfluˈenzə/
- Noun
- Full name for the 'flu'
B2Morelivestock
US /ˈlaɪvˌstɑk/
UK /ˈlaɪvstɒk/
- Noun (Countable/Uncountable)
- Any animals kept for use or profit
B2Moremammal
US /ˈmæməl/
UK /'mæml/
- Noun
- Animal which drinks milk from its mother
B1Moremarine
US /məˈrin/
UK /mə'ri:n/
- Countable Noun
- Soldier trained to serve on land and sea
- Adjective
- Of the ocean or ocean plants and animals
- Concerning sailing or doing business by sea
B1Moreminimize
US /ˈmɪnəˌmaɪz/
UK /'mɪnɪmaɪz/
- Transitive Verb
- To make something seem small or less important
B1Moremodify
US /ˈmɑ:dɪfaɪ/
UK /ˈmɒdɪfaɪ/
- Transitive Verb
- To make minor change to something
B1Moremutate
US /ˈmjutet,mjuˈtet/
UK /mju:'teɪt/
- Intransitive Verb
- To develop into another thing; change
B2Moremutation
US /mjuˈteʃən/
UK /mju:'teɪʃn/
- Noun
- Change that changes genetic structure
B2Moreor simply
US
UK
- Phrase
- Alternatively; in a more straightforward way.
A1Morepandemic
US /pænˈdɛmɪk/
UK /pæn'demɪk/
- Adjective
- (of a disease) existing in almost all of an area or in almost all of a group of people, animals, or plants
- Noun
- a pandemic disease
C2Morepass from
US
UK
- Phrasal Verb
- To be transferred or transmitted from one person or thing to another.
- To be inherited or bequeathed from one person to another.
A1Morepathogen
US /ˈpæθədʒən/
UK /ˈpæθədʒən/
- Noun
- Any disease-producing agent
C1Morepotential
US /pəˈtɛnʃəl/
UK /pəˈtenʃl/
- Adjective
- Capable of happening or becoming reality
- Having or showing the capacity to develop into something in the future.
- Uncountable Noun
- someone's or something's ability to develop, achieve, or succeed
A2TOEICMorepoultry
US /ˈpoʊltri/
UK /ˈpəʊltri/
- Noun (Countable/Uncountable)
- Birds such as chickens, ducks, geese etc.
- Uncountable Noun
- The meat of domesticated birds, used as food.
B2Moreproliferation
US /prəˌlɪfəˈreɪʃn/
UK /prəˌlɪfəˈreɪʃn/
- Uncountable Noun
- Sudden and fast increase in something
B2TOEICMoreresearch
US /rɪˈsɚtʃ, ˈriˌsɚtʃ/
UK /rɪ'sɜ:tʃ/
- Verb (Transitive/Intransitive)
- To study in order to discover new ideas and facts
- To study the market relating to marketing products and services.
- Noun (Countable/Uncountable)
- Study done to discover new ideas and facts
- A particular area or topic of study.
A2TOEICMoreresidue
US /ˈrezɪdu:/
UK /ˈrezɪdju:/
- Noun (Countable/Uncountable)
- Left over part after most is taken away
B2Morerespiratory
US /ˈrɛspərəˌtɔri, -ˌtori, rɪˈspaɪrə-/
UK /ˈrespərəˌtɔ:ri:, -ˌtəʊri:, rɪˈspaɪərə-/
- Adjective
- (Medical) concerning breathing
- Having the function of respiration.
- Noun
- The branch of medicine concerned with the organs of respiration.
- The system of organs involved in breathing.
C1Morescience
US /ˈsaɪəns/
UK /'saɪəns/
- Uncountable Noun
- Study of the physical world, based on facts
A2TOEICMoresneeze
US /sniz/
UK /sni:z/
- Noun
- Act of air suddenly being forced out of nose/mouth
- Intransitive Verb
- To suddenly force air out of nose/mouth
B1Morespecific
US /spɪˈsɪfɪk/
UK /spəˈsɪfɪk/
- Adjective
- Precise; particular; just about that thing
- Concerning one particular thing or kind of thing
A2Morespill
US /spɪl/
UK /spɪl/
- Noun
- Accident when someone falls
- Act of allowing a fluid to escape
- Verb (Transitive/Intransitive)
- To come out of and spread beyond limits
- To tell secrets or let information escape
B1Morespread
US /sprɛd/
UK /spred/
- Noun (Countable/Uncountable)
- A big meal, often laid out as a buffet
- The distance between two things
- Verb (Transitive/Intransitive)
- To place over a large area; to cover a large area
- (Of ideas, gossip) to pass to and affect others
A2TOEICMorestrain
US /stren/
UK /streɪn/
- Transitive Verb
- To remove the water from (food) using a colander
- To injure a muscle, leg etc. by using it too much
- Noun (Countable/Uncountable)
- Injury to a muscle, leg etc. through overuse
- Type or variation of a disease or bacillus
B2Moresurvive
US /sɚˈvaɪv/
UK /sə'vaɪv/
- Intransitive Verb
- To continue to live despite illness or trouble
A2TOEICMoreswine
US /swaɪn/
UK /swaɪn/
- Countable Noun
- A pig
C1Moresymptom
US /ˈsɪmtəm, ˈsɪmp-/
UK /'sɪmptəm/
- Noun
- Sign that suggests that there is a problem
B1Moretaper
US /ˈtepɚ/
UK /'teɪpə(r)/
- Intransitive Verb
- (Of e.g. streets) to become gradually narrower
B2Moretaper off
US
UK
- Phrasal Verb
- To diminish or reduce gradually.
tract
US /trækt/
UK /trækt/
- Noun (Countable/Uncountable)
- A system of body parts or organs that has a particular function (e.g., digestive tract).
- An area of land, typically a large one.
C1TOEICMoretransmission
US /trænsˈmɪʃən, trænz-/
UK /trænsˈmɪʃn/
- Noun
- Part of car including gears affecting speed of car
- Electronic signal sent by radio waves; broadcast
B1Moreupper
US /ˈʌpɚ/
UK /ˈʌpə(r)/
- Noun (Countable/Uncountable)
- Drug that improves mood or increases energy
- Something happy or encouraging
- Adjective
- Located above others of the same kind
- Being the northern part of a region
B1Morevaccine
US /vækˈsin,ˈvækˌsin/
UK /'væksi:n/
- Noun (Countable/Uncountable)
- Shot using weak disease cells to stop same disease
- A preparation of weakened or killed microorganisms, or of antigenic proteins derived from them, used to induce protective immunity in animals.
B2Morevirus
US /ˈvaɪrəs/
UK /'vaɪrəs/
- Noun
- File secretly put on computers to cause harm
- Living organism that causes disease or sickness
B1More
Vocabulary
- bird flu: A highly contagious viral disease affecting birds, which can sometimes spread to humans.
- in fact: Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
- or simply: Alternatively; in a more straightforward way.
- going on: To continue doing something
- taper off: To diminish or reduce gradually.
- as well as: Also; in addition to
- also known as: Also called; alternatively named.
- pass from: To be transferred or transmitted from one person or thing to another.
- for sure: Definitely; certainly; without a doubt.
- from the first: From the very beginning.
- go either way: To have two possible outcomes; to be uncertain.
- avian flu: A type of influenza virus that primarily infects birds, but can sometimes spread to other animals and humans.
- in the past: During a former period of time; previously.
- in depth: Thoroughly and carefully; in detail.
- specific: Precise; particular; just about that thing
- potential: Capable of happening or becoming reality
- pandemic: (of a disease) existing in almost all of an area or in almost all of a group of people, animals, or plants
- aware: Knowing or feeling that something exists
- dread: To await with great fear
- exposure: Allowing light through a cameras lens onto film
- strain: To remove the water from (food) using a colander
- community: Group of people who share a common idea or area
- respiratory: (Medical) concerning breathing
- fear: Unpleasant feeling caused by being aware of danger
- symptom: Sign that suggests that there is a problem
- research: To study in order to discover new ideas and facts
- spread: A big meal, often laid out as a buffet
- mutation: Change that changes genetic structure
- domestic: Someone paid to help with housework in your house
- increase: To make or become larger in size or amount
- contract: To become ill as a result of getting a disease
- concern: To be about a particular topic
- direct: To tell someone in a very clear way to do something
- adapt: To change something for a different function
- contact: Touching or feeling something
- vaccine: Shot using weak disease cells to stop same disease
- dairy: Concerning or made from milk
- survive: To continue to live despite illness or trouble
- risk: To do something potentially dangerous or foolish
- scary: Causing fear; frightening
- pathogen: Any disease-producing agent
- mammal: Animal which drinks milk from its mother
- coronavirus: Any of a group of RNA viruses that cause a variety of diseases in humans and other animals.
- spill: Accident when someone falls
- marine: Soldier trained to serve on land and sea
- livestock: Any animals kept for use or profit
- important: Having power or authority
- science: Study of the physical world, based on facts
- order: Religious or social group, as of nuns
- fact: Something that is known or proved to be true
- catch: Amount of something that has been caught
- tract: A system of body parts or organs that has a particular function (e.g., digestive tract).
- modify: To make minor change to something
- residue: Left over part after most is taken away
- suit: To be appropriate for a given situation
- host: Mass; a great number
- contaminate: To make impure by adding a harmful element
- virus: File secretly put on computers to cause harm
- proliferation: Sudden and fast increase in something
- cattle: Cows or bulls on a farm
- bind: To cover a wound, as with a bandage
- catchy: Being easy to like, remember (of songs)
- sneeze: Act of air suddenly being forced out of nose/mouth
- immunity: State of not being able to catch a disease
- poultry: Birds such as chickens, ducks, geese etc.
- minimize: To make something seem small or less important
- airborne: Being in the air
- transmission: Part of car including gears affecting speed of car
- acidic: Containing acid
- university: High-level educational institution; college
- human: A person; a man, woman or child
- circulate: To go round continuously
- influenza: Full name for the 'flu'
- upper: Drug that improves mood or increases energy
- mutate: To develop into another thing; change
- people: Persons sharing culture, country, background, etc.
- swine: A pig
- flu: Illness causing headache, fever etc.
- show: To be easily seen or displayed
- avian: Of or typical of birds
- asap: Shortened form of 'As soon as possible'
- taper: (Of e.g. streets) to become gradually narrower
Get the full experience in the app
Learn anywhere with detailed sentence and usage analysis
01:03
She took a brave step forward, leaving behind her comfort zone to chase her dreams.
Vocabulary
- brave
adj. Having courage
- comfort zone
phr. A familiar situation where one feels safe
Explanation
a brave step is a noun phrase, where brave is an adjective modifying the noun step, meaning "a courageous step".
forward is an adverb modifying step, meaning "ahead".
The whole phrase serves as the object, answering the "what" of took (verb) — she took a brave step forward.
Get the full experience in the app
Look up words anytime with pronunciation, part of speech, and usage
brave
US/brev/
UK/breɪv/
adj.Brave
v.t.To bravely face
A2 Elementary
Get the full experience in the app
Practice speaking anytime and get instant pronunciation feedback
Try this speaking exercise.
Try practicing with this sentence.
80
0
林宜悉 posted on 2025/06/18Ever wondered about H5N1 and its potential pandemic risks? This video dives deep into Avian Influenza, explaining virus mutations and zoonotic spillover with tons of advanced vocabulary you'll want to pick up. You'll also learn about flu vaccines and farm biosecurity, making it a super informative watch!
Learn this video on the APP!
The VoiceTube App has more in-depth practice for videos!