他在使用一种危险的药物——这种药物很快作用于中枢神经系统。

He's taking a dangerous drug: it acts very fast on the central nervous system.

《柯林斯英汉双解大词典》

内分泌系统是一种作用于周身各器官的系统。

The endocrine system is a system that acts on various organs throughout the body.

youdao

刹车是如何作用于滑翔伞的机翼的？

How does the brake act on the paraglider airfoil?

youdao

I didn't even need to know that heat capacity of the product, right. Because it's effect the thermal mass of the product is negligible compared to the thermal mass of the calorimeter.

我甚至不需要知道生成物的,热容是多少，因为生成物的,热质量的作用相比于,量热计的热质量是可以忽略的。

麻省理工公开课 - 热力学与动力学课程节选

Because positive psychology may mean that we are only focusing on the positive and what works, ignoring all the rest that are not.

因为积极心理学可能表示,我们只聚焦于积极的起作用的部分，忽略其余不起作用的。

哈佛公开课 - 幸福课课程节选

An example of that is, of course, insulin which is produced by cells of the pancreas and acts on cells all over the body.

这种信号传递的例子,就是胰脏细胞产生的胰岛素,作用于全身各处的细胞

耶鲁公开课 - 生物医学工程探索课程节选