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    Why the moon is still such a mystery | BBC Ideas

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    Summer posted on 2020/12/16
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    Video vocabulary

    perceive

    US /pɚˈsiv/

    UK /pə'si:v/

    • Transitive Verb
    • To notice or become aware of something
    • To think of someone or something in a certain way
    B1TOEIC
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    present

    US /ˈprɛznt/

    UK /'preznt/

    • Adjective
    • Being in attendance; being there; having turned up
    • Being in a particular place; existing or occurring now.
    • Noun
    • Gift
    • Verb tense indicating an action is happening now
    A1TOEIC
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    constant

    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.
    A2TOEIC
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    ancient

    US /ˈenʃənt/

    UK /'eɪnʃənt/

    • Adjective
    • Very old; having lived a very long time ago
    • Relating to a period in history, especially in the distant past.
    • Noun
    • A person who lived in ancient times.
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