Take-homes require thoughtful engagement which can lead to longer term stress as there is never a moment when the time is up.

参与在家的开卷考试时需要深思熟虑，因为这种考试没有时间期限，所以可能会导致长期压力。

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Reforms were promised when the time was ripe.

曾经作出承诺，时机一成熟就进行改革。

《牛津词典》

He had decided long ago that he would put his trust in socialism when the time came.

他很久以前就已决定，他到时候将信仰社会主义。

《柯林斯英汉双解大词典》

When the time finally came for Strasburg to take the mound, he did not let fans down.

VOA: special.2010.06.18

Why don't we have you, when the time comes, raise your hand if you're supposed to be representing a one?

为什么让家上来呢，如果你代表1，就举起你的手？

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but it's just like a time when they really took the care to look at how to construct things.

但它代表了一个时期，那时他们真正关注搞建筑的方法。

我喜欢的建筑物 - SpeakingMax英语口语达人

Recognising when the time is right, and seizing the opportunity is absolutely key to success.

BBC: Women entrepreneurs: Starting out in your forties

When the time came to give back to the community, it was a no brainer.

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When the time comes to judge the parties' electoral strategies, voters should remember that.

ECONOMIST: Bashing the rich is bad politics and rotten economics