Scientists study the composition of the soil.

科学家研究土壤的构成。

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The composition and levels of air pollution vary from place to place.

空气污染的成分和程度在各个地方都不尽相同。

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Spectroscopy can reveal the composition of those touch-up layers too.

光谱学也可以揭示这些修饰层的组成。

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But when you step back and listen to the composition, all these elements artfully come together.

VOA: special.2010.03.24

We have a strained image of the composition of the poem at its very outset and we have an image of someone writing as if he were participating in a race.

如果一开始我们就对诗歌的创作有一种不友善的印象,那么我们就会对诗人有一种印象,就好像他正在参加一场竞赛。

耶鲁公开课 - 弥尔顿课程节选

Nevertheless, as much as we like to engage sometimes in this kind of analysis about the sources that have gone into the composition of the text it's also always important to keep your eye on the final form of the text as we've received it.

然而，当我们大量的进行,对关于著书来源的分析时,很重要的一点是，我们要留意,我们拿到的最终版本。

耶鲁公开课 - 旧约导论课程节选

And he does have Democratic co-sponsors, something that is critical given the composition of the Senate.

FORBES: Sen. Corker's Plan To Reduce The Fiscal Burden Of Government

But the U.N. and Hun Sen disagree on the composition and structure of the tribunal.

CNN: Seeking Justice

Assuming not, might it also help to more accurately date the composition of the source material?

FORBES: Could Computer Analysis Help Date the Gospels?