N-COUNT [usually singular] 试金石;立见分晓的检验办法 If you say that something is a litmus test of something, you mean that it is an effective and definite way of proving it or measuring it. 试金石;立见分晓的检验办法
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Ending the fighting must be the absolute priority, the litmus test of the agreements' validity. [+ of]
停火绝对是第一要务,也是检验协议是否有效的试金石。
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The success of wind power represents a litmus test for renewable energy. [+ for]
风能作为动力的成功是对可再生能源一次立见分晓的检验。
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