The success of wind power represents a litmus test for renewable energy.

风能利用的成功是对可再生能源的一次立见分晓的检验。

《柯林斯英汉双解大词典》

She gave a surprise test for us.

她给了我们一次突击测试。

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That's a test for the PM.

这是对总理的考验。

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It took a number of years before Congress was able to pass a law demanding a literacy test for immigrants.

VOA: special.2010.05.20

Important lesson, so that there would be some predictability in the results and I would have some, if you will, smoke test for knowing whether or not I was getting, my code seemed to be working.

这很重要，因为这样我就可以预测,结果会是多少了，如果你愿意，我们可以做烟气试验,来看我的代码是否工作正常。

麻省理工公开课 - 计算机科学及编程导论课程节选

For example, let's pretend that you are speaking with a friend who had been studying for a test for some time.

例如，我们假设你跟一位朋友在聊天，他已经为一门考试复习了好一段时间。

I'm sure 课堂 - SpeakingMax英语口语达人

New sunscreen labels in effect this year require a pass-fail test for UVA and UVB protection.

WSJ: European Sunscreen Roadblock on U.S. Beaches

Instead, mathematicians turn to other, indirect, methods that can test for primality without factorisation.

ECONOMIST: Number theory

Egg abnormalities also usually involve larger chromosomal changes, and are therefore easier to test for.

BBC: 'Older fathers' link to schizophrenia