People often don't appreciate that marble is a natural stone.

人们往往不了解大理石是一种天然石头。

《柯林斯英汉双解大词典》

The term "fossil" often implies petrifaction, literally a transformation into stone.

“化石”这个词通常意味着石化，字面意思是变成石头。

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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。

哈佛公开课 - 幸福课课程节选

While they serve this important function, the pain due to the stents is often worse than the kidney stone itself.

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Mr Stone said violence often erupted when patients became frustrated by long waiting times, lack of information and a fear of the environment they found themselves in.

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Before the two packs - which at Test level can weigh in the region of 120 stone each - often charged into contact from as much as three feet away.

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