Idiom: Ace up one's sleeve
Jan 19, 2015, 04:13 AM
To have an effective but hidden means to accomplish something. Source: http://americanenglish.state.gov/resources/loop #idioms, #learnenglish, #esl
To have an effective but hidden means to accomplish something. Source: http://americanenglish.state.gov/resources/loop #idioms, #learnenglish, #esl
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