Vocabulary

  • look for: To try to find a thing or person that is lost
  • in action: Actively doing something; performing a task or duty.
  • burn in: To cause a permanent ghost image on a screen by displaying a static image.
  • used to: Did regularly before, but don't do now
  • at least: As a minimum
  • think of: To look on as (being something specific); consider
  • up in the air: Not yet decided or resolved; uncertain.
  • in the air: Present or circulating in the atmosphere.
  • inside of: Within; in the inner part of.
  • at the same time: Simultaneously; at the identical moment.
  • same time: Occurring simultaneously or at the same point in time.
  • depending on: To rely on for support (financial or emotional)
  • of course: Sure ; Certainly
  • instead of: When one thing is replaced by another
  • step back: To move backwards; to move away from something.
  • in color: Displayed or produced using all colors; not black and white.
  • specific: Precise; particular; just about that thing
  • fuel: To give power to (a mob, anger, etc.); incite
  • produce: Fresh foods such as fruits and vegetables
  • device: Object, machine, or equipment for a specific use
  • case: Container used to carry things, e.g. clothes
  • chemical: Basic substance produced by mixing elements
  • flame: To glow
  • shell: Hard outer cover of an egg, fruit, nut, or seed
  • burn: To destroy with fire
  • chemistry: The study of the structure of substances
  • composition: Piece of writing, music etc.
  • powder: Dry material made up of small powder-like pieces
  • calcium: A substance important for making bones and teeth
  • mixture: Something made by combining two or more things
  • black: To fill in something to make it a very dark color
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    • at least

      US /æt list/

      UK /æt li:st/

      • Adverb
      • As a minimum
      • Not less than
      • Phrase
      • No less than; at the minimum
      • Used to indicate that something is positive in a bad situation.
      C2
      More
    • at the same time

      US

      UK

      • Phrase
      • Simultaneously; at the identical moment.
      • Nevertheless; however; used to introduce a contrasting or qualifying statement.
      A1
      More
    • burn in

      US /bɝn ɪn/

      UK /bɜ:n in/

      • other
      • To cause a permanent ghost image on a screen by displaying a static image.
      B2
      More
    • calcium

      US /ˈkælsiəm/

      UK /'kælsɪəm/

      • Uncountable Noun
      • A substance important for making bones and teeth
      • A substance containing calcium, taken to improve health.
      C2
      More
    • chemical

      US /ˈkɛmɪkəl/

      UK /ˈkemɪkl/

      • Noun (Countable/Uncountable)
      • Basic substance produced by mixing elements
      • The branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.
      • Adjective
      • Made of various elements
      A2
      More
    • chemistry

      US /ˈkɛmɪstri/

      UK /'kemɪstrɪ/

      • Uncountable Noun
      • The study of the structure of substances
      B1
      More
    • composition

      US /ˌkɑ:mpəˈzɪʃn/

      UK /ˌkɒmpəˈzɪʃn/

      • Noun (Countable/Uncountable)
      • Piece of writing, music etc.
      • A piece of music
      A2
      More
    • depending on

      US

      UK

      • Phrasal Verb
      • To rely on for support (financial or emotional)
      • Influenced or determined by.
      • Preposition
      • Subject to; contingent on
      • Relying on someone or something for support or assistance.
      A2
      More
    • device

      US /dɪˈvaɪs/

      UK /dɪˈvaɪs/

      • Noun (Countable/Uncountable)
      • Object, machine, or equipment for a specific use
      • Method of doing something; a way
      A2TOEIC
      More
    • flame

      US /flem/

      UK /fleɪm/

      • Intransitive Verb
      • To glow
      • To burn or glow in a fire
      • Noun
      • The red part you can see in fire
      A2
      More
    • fuel

      US /ˈfjuəl/

      UK /'fju:əl/

      • Transitive Verb
      • To give power to (a mob, anger, etc.); incite
      • To provide gas or petrol for something
      • Uncountable Noun
      • Material used to produce heat or power when burned
      A2TOEIC
      More
    • in action

      US

      UK

      • Phrase
      • Actively doing something; performing a task or duty.
      More
    • in color

      US

      UK

      • Phrase
      • Displayed or produced using all colors; not black and white.
      • Adjective
      • Full of vivid colors; bright and vibrant.
      A1
      More
    • in the air

      US

      UK

      • Phrase
      • Present or circulating in the atmosphere.
      • Felt or sensed by many people; circulating as a rumor or feeling.
      • Adjective
      • Being broadcast on radio or television.
      A1
      More
    • inside of

      US /ɪnˈsaɪd ʌv/

      UK /inˈsaid ɔv/

      • Preposition
      • Within; in the inner part of.
      • Within a certain period of time.
      A1
      More
    • instead of

      US /ɪnˈstɛd ʌv/

      UK /inˈsted ɔv/

      • Preposition
      • When one thing is replaced by another
      • Adverb
      • As a substitute or alternative.
      A1
      More
    • look for

      US /lʊk fɔr/

      UK /luk fɔ:/

      • Phrasal Verb
      • To try to find a thing or person that is lost
      • To expect or anticipate something.
      A1
      More
    • mixture

      US /ˈmɪkstʃɚ/

      UK /ˈmɪkstʃə(r)/

      • Noun (Countable/Uncountable)
      • Something made by combining two or more things
      B1
      More
    • of course

      US /ʌv kɔː(r)s/

      UK /ɔv kɔː(r)s/

      • Adverb
      • Sure ; Certainly
      • Phrase
      • For sure; certainly
      A2
      More
    • powder

      US /ˈpaʊdɚ/

      UK /'paʊdə(r)/

      • Noun (Countable/Uncountable)
      • Dry material made up of small powder-like pieces
      • Dry and light form of snow
      • Transitive Verb
      • To apply a dust onto the body or face
      • To reduce to powder; pulverize.
      B1
      More
    • same time

      US

      UK

      • Phrase
      • Occurring simultaneously or at the same point in time.
      • At the identical time as before; recurring at a fixed hour.
      • Noun
      • An equal duration or period.
      A1
      More
    • shell

      US /ʃɛl/

      UK /ʃel/

      • Noun (Countable/Uncountable)
      • Hard outer cover of an egg, fruit, nut, or seed
      • Hard metal container containing a bullet
      • Transitive Verb
      • To remove the outer covering of peas, nuts etc.
      • To fire shells (weapons) at
      B1
      More
    • specific

      US /spɪˈsɪfɪk/

      UK /spəˈsɪfɪk/

      • Adjective
      • Precise; particular; just about that thing
      • Concerning one particular thing or kind of thing
      A2
      More
    • step back

      US /stɛp bæk/

      UK /step bæk/

      • Phrasal Verb
      • To move backwards; to move away from something.
      • To take a break from something; to gain perspective.
      A1
      More
    • think of

      US /θɪŋk ʌv/

      UK /θiŋk ɔv/

      • Phrasal Verb
      • To look on as (being something specific); consider
      • To consider or remember something.
      • Verb (Transitive/Intransitive)
      • To imagine or call something to mind
      A1
      More
    • up in the air

      US

      UK

      • Adjective
      • Not yet decided or resolved; uncertain.
      • Idiom
      • In an uncertain state; unresolved.
      More
    • used to

      US /juzd tu/

      UK /ˈju:st tə/

      • Adjective
      • Did regularly before, but don't do now
      • Auxiliary Verb
      • Have done before, but do not do now
      A1
      More
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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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    B2
    #fuse#propellant#powder#chemical#flame#chemistry

    The Chemistry of Fireworks - Reactions

    0
    阿多賓 posted on 2014/12/31
    Ever wondered what makes fireworks explode in dazzling colors? This video dives into the amazing chemistry behind pyrotechnics, showing you the reactions that create those spectacular displays! You'll pick up some fantastic vocabulary related to color chemistry and oxidizers, perfect for expanding your English knowledge.

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