We are talking about the Neolithic period here, which was the time before stone tools began to be replaced by tools made of bronze and other metals.

我们这里在说的是新石器时代，是石器开始被青铜和其他金属制工具所取代之前的那个时代。

youdao

For the time before records began, we have only "proxy records" reconstructed largely from tree rings and ice cores, supplemented by a few incomplete written accounts.

在开始有记录之前，我们只有主要根据年轮和冰芯重建的“代理记录”，还有一些不完整的书面记录作为补充。

youdao

Their piece of bread was given to them, but it was still smaller than the time before.

他们拿到了面包，但还是比上次的还小。

youdao

There have been delays before. Officials said the average processing time in October of two thousand three was seventy-five days.

VOA: special.2009.06.11

If you go back to the time before that, we talked about this partnership game.

再往前回顾一下,我们之前还讲过合伙人的博弈

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What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.

在这之前是很整洁的，之前最主要的用于空调或者冰箱的,物质是氨。

麻省理工公开课 - 固态化学导论课程节选

Such a purchase would substantially shorten the time before Iran could have a nuclear weapon.

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The time before, he was caught by the Greeks and detained for several weeks.

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Companies can differentiate themselves on sustainability performance, but the time before an issue becomes generic is short.

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