4000 Duolingo Vocabulary List

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n. 效率,功效 effectiveness; quality or property of being efficient; the ratio of useful output to the total input in any system

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n. 努力,盡力,成果 the exertion of strength or power, whether physical or mental, in performing an act or aiming at an object

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ad. 熱心地,滿腔熱情地 eagerly; wholeheartedly; in a lavish or enthusiastic manner

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n. 使人激動的,令人興奮的 creating or producing excitement

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n. 專業知識,技能 specialized knowledge; expert skill

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a. 清晰的,坦率的 precisely and clearly expressed; definite; outspoken

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a. 外部的,表面的 exterior; outer; suitable for application to the outside

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a. 滅絕的,不再活躍的,熄滅的 no longer existing or living; vanished; dead

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a. 興高采烈的 high spirited; joyously unrestrained; abundant; luxurious

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v. 促進,幫助,使變容易 help bring about; make less difficult