actin
US /'æktɪn/
UK /'æktɪn/
- Uncountable Noun
- A proteins into which actomyosin can be split
C2Morealso known as
US
UK
- Phrase
- Also called; alternatively named.
- Identified by another term; synonymous with.
A1Morebloodstream
US /ˈblʌdˌstrim/
UK /ˈblʌdstri:m/
- Uncountable Noun
- Blood flowing through the circulatory system
C2Morecargo
US /ˈkɑ:rgoʊ/
UK /ˈkɑ:gəʊ/
- Noun (Countable/Uncountable)
- Goods carried in a ship or plane
B2Morecharacteristic
US /ˌkærəktəˈrɪstɪk/
UK /ˌkærəktəˈrɪstɪk/
- Adjective
- Typical or distinctive
- Noun (Countable/Uncountable)
- A feature or quality belonging typically to a particular person, place, or thing and serving to identify it
A2Morecirculation
US /ˌsɚkjəˈleʃən/
UK /ˌsɜ:kjəˈleɪʃn/
- Noun (Countable/Uncountable)
- Movement of blood through the body
- Repeatedly passing items from one person to others
B1Moreconstant
US /ˈkɑnstənt/
UK /'kɒnstənt/
- Adjective
- Happening frequently or without pause
- Remaining the same over time or not changing.
- Noun
- Thing that happens always or at a regular rate
- A physical quantity that is believed to have a fixed value and is used in calculations.
A2TOEICMoreconstantly
US /ˈkɑnstəntlɪ/
UK /ˈkɒnstəntli/
- Adverb
- Frequently, or without pause
- In a way that is unchanging or faithful
B1Moredeliver
US /dɪˈlɪvɚ/
UK /dɪ'lɪvə(r)/
- Transitive Verb
- To give birth to a child; help a woman give birth
- To save someone from a problem or crisis
A2TOEICMoredestination
US /ˌdɛstəˈneʃən/
UK /ˌdestɪˈneɪʃn/
- Noun
- The place you are traveling to
- A place regarded as worth visiting or traveling to.
B1TOEICMoreefficient
US /ɪˈfɪʃənt/
UK /ɪˈfɪʃnt/
- Adjective
- Able to produce results without waste
- Capable of producing desired results with little or no waste (of time, energy, or other resources).
A2TOEICMoreessential
US /ɪˈsɛnʃəl/
UK /ɪ'senʃl/
- Adjective
- Extremely or most important and necessary
- Fundamental; basic.
- Noun
- A concentrated hydrophobic liquid containing volatile aroma compounds from plants.
B1TOEICMoreextraordinary
US /ɪkˈstrɔ:rdəneri/
UK /ɪkˈstrɔ:dnri/
- Adjective
- Beyond what is ordinary; very unusual; remarkable
- Additional to or different from what is usual or regular.
B1TOEICMoreextremely
US /ɪk'strimlɪ/
UK /ɪkˈstri:mli/
- Adverb
- In a way that is much more than usual or expected
- Remarkably; unusually.
B1Morefleet
US /flit/
UK /fli:t/
- Countable Noun
- Group of ships under one commander
- Adjective
- able to run quickly
B1TOEICMoreflexibility
US
UK
- Uncountable Noun
- The quality of being able to be bent or stretched
B1TOEICMoreflexible
US /ˈflɛksəbəl/
UK /ˈfleksəbl/
- Adjective
- Bending easily
- Able to adjust to new events, requirements easily
B1TOEICMorein on
US
UK
- Phrase
- To be involved in a secret or plan.
- To be aware of something that is secret or not generally known.
A1Morejourney
US /ˈdʒɚni/
UK /'dʒɜ:nɪ/
- Noun
- Act of traveling from one place to another; trip
- Intransitive Verb
- To travel through a place
A2TOEICMorekitty
US /ˈkɪti/
UK /'kɪtɪ/
- Countable Noun
- Amount of money a group of people share
- Money contributed for expenses by group of people
- Proper Noun
- Person's name
B2Moremature
US /məˈtʃʊr/
UK /məˈtʃʊə(r)/
- Adjective
- Behaving like an adult
- Being fully developed physically
- Intransitive Verb
- (Wine, cheese) To age to improve its taste
A2Moremembrane
US /ˈmɛmˌbren/
UK /'membreɪn/
- Noun (Countable/Uncountable)
- Outside covering of a cell
- A thin covering of tissue or of a cell
B2Moremission
US /ˈmɪʃən/
UK /'mɪʃn/
- Noun (Countable/Uncountable)
- A task or role someone is given to do
- Special assignment given to a person or group
B1TOEICMoremolecule
US /ˈmɑlɪˌkjul/
UK /ˈmɒlɪkju:l/
- Noun
- Two or more atoms chemically combined
B2Morenarrow
US /ˈnæro/
UK /'nærəʊ/
- Adjective
- Not wide; short from one side to the other
- Limited; not broad in scope
- Intransitive Verb
- To become thinner or less wide
A2TOEICMoreoxygen
US /ˈɑksɪdʒən/
UK /'ɒksɪdʒən/
- Uncountable Noun
- A gas in the air that we need to breathe
- Oxygen administered as a medical treatment.
B1Moreplasma
US /ˈplæzmə/
UK /ˈplæzmə/
- Uncountable Noun
- Substance in which the blood cells are carried
- Gas-like substance with little electric charge
B2Moreprotein
US /ˈprəʊˌtiːn/
UK /ˈprəʊti:n/
- Noun (Countable/Uncountable)
- Group of molecules made from amino acids
B1Morereach
US /ritʃ/
UK /ri:tʃ/
- Verb (Transitive/Intransitive)
- To come to or arrive at a goal or destination
- To be long enough to get to a certain place
- Uncountable Noun
- Power or control someone has over something
A2TOEICMoreremarkable
US /rɪˈmɑrkəbəl/
UK /rɪˈmɑ:kəbl/
- Adjective
- Interesting and unexpected, worthy of notice
- Worthy of attention; striking.
A2TOEICMorerepeatedly
US /rɪ'pi:tɪdlɪ/
UK /rɪ'pi:tɪdlɪ/
- Adverb
- (Said, done) many times; over and over
B2Moreroughly
US /ˈrʌflɪ/
UK /ˈrʌfli/
- Adverb
- Approximately; (of numbers) about; around
- In a manner that is violent or not careful
B1Moresketch
US /skɛtʃ/
UK /sketʃ/
- Noun
- Brief account of something without many details
- A drawing made quickly that lacks detail
- Transitive Verb
- To make a rough plan or idea of something
- To draw images roughly with a pencil
B1Moreslightly
US /ˈslaɪtli/
UK /ˈslaɪtli/
- Adverb
- Only a little
B1Morespleen
US /splin/
UK /spli:n/
- Noun
- Organ near stomach that controls quality of blood
C1Moresqueeze
US /skwiz/
UK /skwi:z/
- Noun (Countable/Uncountable)
- Amount of liquid from firmly pressing e.g. orange
- Act of putting pressure on, as to get liquid out
- Transitive Verb
- To force or threaten someone to give you something
- To strongly compress something to get liquid out
C1Morestrength
US /strɛŋkθ, strɛŋθ, strɛnθ/
UK /streŋθ/
- Noun (Countable/Uncountable)
- Condition of being strong
- The quality or state of being physically strong.
A2TOEICMorestretch
US /strɛtʃ/
UK /stretʃ/
- Verb (Transitive/Intransitive)
- To make your arm, leg muscles long to ease them
- To make something bigger by pulling on it
- Noun
- Making arm, leg muscles longer to ease them
- A consecutive row of things
A2TOEICMoresuch as
US /sʌtʃ æz/
UK /sʌtʃ æz/
- Preposition
- For example; like
A1Moresurvive
US /sɚˈvaɪv/
UK /sə'vaɪv/
- Intransitive Verb
- To continue to live despite illness or trouble
A2TOEICMoresuspend
US /səˈspɛnd/
UK /sə'spend/
- Transitive Verb
- To hang something or someone from something
- To stop something for a period of time; interrupt
B2TOEICMorethick
US /θɪk/
UK /θɪk/
- Adjective
- Difficult to see through, as fog
- Full of (people, etc.)
- Adverb
- In close association or friendship.
A2Moretiny
US /ˈtaɪni/
UK /'taɪnɪ/
- Adjective
- Very, very small
A2Moretissue
US /ˈtɪʃu/
UK /ˈtɪʃu:/
- Noun (Countable/Uncountable)
- Substance formed by cells of living thing; flesh
- Kind of thin, light paper used to pack objects
A2Morezoom in on
US
UK
- Phrasal Verb
- To adjust a camera or lens to make a subject appear closer.
- To focus attention on something specific.
A1More
Vocabulary
- also known as: Also called; alternatively named.
- zoom in on: To adjust a camera or lens to make a subject appear closer.
- in on: To be involved in a secret or plan.
- such as: For example; like
- constantly: Frequently, or without pause
- extraordinary: Beyond what is ordinary; very unusual; remarkable
- essential: Extremely or most important and necessary
- extremely: In a way that is much more than usual or expected
- constant: Happening frequently or without pause
- stretch: To make your arm, leg muscles long to ease them
- slightly: Only a little
- journey: Act of traveling from one place to another; trip
- matter: To be of great importance; to count
- immediately: Without any delay; straight away
- destination: The place you are traveling to
- strength: Condition of being strong
- squeeze: Amount of liquid from firmly pressing e.g. orange
- roughly: Approximately; (of numbers) about; around
- molecule: Two or more atoms chemically combined
- protein: Group of molecules made from amino acids
- brain: To strike someone forcefully on the head
- efficient: Able to produce results without waste
- reach: To come to or arrive at a goal or destination
- tiny: Very, very small
- mature: Behaving like an adult
- remarkable: Interesting and unexpected, worthy of notice
- form: Sports team or person's current winning record
- deliver: To give birth to a child; help a woman give birth
- survive: To continue to live despite illness or trouble
- thick: Difficult to see through, as fog
- characteristic: Typical or distinctive
- flexible: Bending easily
- break: To create a new record e.g. running the 100m dash
- oxygen: A gas in the air that we need to breathe
- tissue: Substance formed by cells of living thing; flesh
- shape: The outer form of something, what it looks like
- mind: To be bothered or upset by something
- produce: Fresh foods such as fruits and vegetables
- narrow: Not wide; short from one side to the other
- circulation: Movement of blood through the body
- important: Having power or authority
- single: One run in cricket or a hit baseball
- bloodstream: Blood flowing through the circulatory system
- learn: To get knowledge or skills by study or experience
- system: Set of organized, planned ideas that work together
- continue: To do something without stopping, or after pausing
- build: Your physical shape; physique
- mission: A task or role someone is given to do
- membrane: Outside covering of a cell
- suit: To be appropriate for a given situation
- sketch: Brief account of something without many details
- fleet: Group of ships under one commander
- suspend: To hang something or someone from something
- flexibility: The quality of being able to be bent or stretched
- repeatedly: (Said, done) many times; over and over
- plasma: Substance in which the blood cells are carried
- cargo: Goods carried in a ship or plane
- spleen: Organ near stomach that controls quality of blood
- kitty: Amount of money a group of people share
- actin: A proteins into which actomyosin can be split
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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.
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brave
US/brev/
UK/breɪv/
adj.Brave
v.t.To bravely face
A2 Elementary
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80
What Are Red Blood Cells? 🩸 | How Do Red Blood Cells Carry Oxygen? | Dr. Binocs Show
0
林宜悉 posted on 2026/11/04Ever wonder how your blood actually stays on the move? Join Dr. Binocs for a fun look at how red blood cells, or erythrocytes, use their unique shape and hemoglobin to transport oxygen through your body. You will pick up some fascinating biology vocabulary while learning why these tiny cells are essential to your everyday health.
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