Human beings used stone chips for more than two million years, but human life changed very little in that time.

人类使用石屑超过二百万年，但在那段时间里，人类的生活几乎没有改变。

youdao

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

Each time I returned here, I saw that stone and it always comforted me.

每次我回到这里，都会看到那块石头，它总是给我以安慰。

youdao

From time to time, he would visit the Judge in his big stone house.

VOA: special.2010.06.26

We have a lot of potential that over time with we fix stone of voices with being part of our culture that very often these limitations are put on top of us just like the excess stone.

但是渐渐地受到外部文化压力,像多余石料一样，把我们禁锢起来了。

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Since that time, Stone has radically reshaped the camp, working to change the attitudes of the guards and detainees alike.

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Over time the stone will pass.

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Most of the time, Jon Stone was a subversive.

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