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    Video vocabulary

    crucial

    US /ˈkruʃəl/

    UK /'kru:ʃl/

    • Adjective
    • Extremely important or necessary
    • Of great importance to the success of something.
    demonstrate

    US /ˈdɛmənˌstret/

    UK /'demənstreɪt/

    • Verb (Transitive/Intransitive)
    • To display a feeling or ability openly
    • To protest about something often as a group
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    average

    US /ˈævərɪdʒ, ˈævrɪdʒ/

    UK /'ævərɪdʒ/

    • Noun (Countable/Uncountable)
    • Total of numbers divided by the number of items
    • Transitive Verb
    • To add numbers then divide by the number of items
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    category

    US /ˈkætɪˌɡɔri, -ˌɡori/

    UK /ˈkætəgəri/

    • Noun
    • Groups of things that are similar in some way
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