英语单词“be on the ball”的翻译、意思、用法、释义-英汉词典

单词	be on the ball
释义	be on the ball1.■[俚语]2.■变机警；机灵能干；活跃；准备应急；提高警惕，警觉3.■专心做事；知情，内行，能胜任；积极能干，有能力，擅长于；精力充沛
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