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    challenge

    US /ˈtʃæləndʒ/

    UK /'tʃælɪndʒ/

    • Noun (Countable/Uncountable)
    • An activity you wish to try that may be hard to do
    • Act of formally inviting someone to compete
    • Transitive Verb
    • To formally invite someone to compete at something
    • To question the correctness of something
    system

    US /ˈsɪstəm/

    UK /'sɪstəm/

    • Noun (Countable/Uncountable)
    • Set of organized, planned ideas that work together
    • A set of principles or procedures according to which something is done; an organized scheme or method.
    • Adjective
    • Working in an organized, logical way
    A1TOEIC
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    energy

    US /ˈɛnədʒi/

    UK /'enədʒɪ/

    • Noun (Countable/Uncountable)
    • Physical or mental strength
    • Enthusiasm and determination.
    high

    US /haɪ/

    UK /haɪ/

    • Adjective
    • Excited or relaxed from taking drugs
    • Being of excellent quality or excellent standards
    • Adverb
    • At or to a place far above the ground
    • At a great value, amount or price
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