在形成的过程中，材料必须接收到环境信号，反映气候变化，并能被现代物理或化学手段破译。

In the process of formation, the material must have received an environmental signal that reflects a change in climate and that can be deciphered by modern physical or chemical means.

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没有什么简单或单一的因素能决定一个给定的地点是否会成为热带草原，但部分因素似乎在热带草原的形成中扮演着重要的角色。

There is no simple or single factor that determines if a given site will be a savanna, but some factors seem to play important roles in their formation.

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在锥实螺的例子中，研究表明右旋基因是在卵的形成期表达的。

In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during egg formation.

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So, more data to come, so this is a clip some of you might have seen in section already.

随着更多数据的出现，就会形成一个标签,有些人可能已在相应章节中看到过了。

哈佛公开课 - 计算机科学课程节选

And you will form a crystal of sodium chloride as a result of this need to form crystal expressed through the Coulomb's Law.

你能得到氯化钠晶体,因此，形成晶体所需要的条件,在库伦定律中通篇都有表达。

麻省理工公开课 - 固态化学导论课程节选

We have certain instincts that are there and have been formed either God-given or evolutionary-given for millions of years that have been formed.

我们有生而有之的本能,或上天赐与或经几百万年,在进化中形成。

哈佛公开课 - 幸福课课程节选