Digestion begins in the mouth with the action of saliva.

消化是在口腔中唾液的作用下开始的。

youdao

However, most of its internal heat comes from the action of its muscles.

然而，它的大部分内热来自肌肉活动。

youdao

In addition, breathing during REM depends much more on the action of the diaphragm and much less on rib cage action.

另外，快速眼动期的呼吸活动更多地取决于横膈膜的反应活动，而胸腔的作用要小得多。

youdao

Guides explain that it did not result from the action of water and streams like other limestone caves.

VOA: special.2009.12.07

But it's not because of some magical property in the fruit itself, but because of the action of disobedience itself.

但并不是因为苹果本身拥有的魔力，而是因为叛逆这一行为本身。

耶鲁公开课 - 旧约导论课程节选

So again, the ethical message here is that humans are in control of their destiny and the action of every individual affects and influences the fate of society.

因此这里的道德上的启示就是,人类主宰着自己的命运,每个个体所作的行为,都会影响整个社会的命运。

耶鲁公开课 - 旧约导论课程节选

Is the latest run the action of speculators, as Silvio Berlusconi mused in his farewell statement?

ECONOMIST: Market discipline works when other controls fail

Erosion: wearing away of the land, usually by the action of natural forces.

UNESCO: L O S S A R Y

In these cases, treatments based on blocking the action of the hormone may be offered.

BBC: Q&A: Breast screening