负压疗法降低了频繁给伤口换绷带的需要，从之前每天换1到3次降低到几天才换一次；在医护人员紧缺的时候，这会起到很大的作用。

Negative-pressure therapy decreases the need to change wound dressings from one to three times per day to once every few days, a major benefit when medical staff is in short supply.

youdao

假如病人在几周后感觉药物作用很小或者没有作用，那么他(她)的医生就会给其增加剂量或者换另一种抗抑郁药物。

If a patient feels little or no improvement after several weeks, his or her psychiatrist will alter the dose of the medication or will add or substitute another antidepressant.

youdao

它的主要换热作用由布置在转子中的受热面来完成。

Its main heat exchange function is realized by heating surface arranged in rotors.

youdao

So you know, what the second law is doing, in other words, it's putting these restrictions on how well or how effectively we can convert heat into work in the case of the engine, or work into heat extracted in the case of a refrigerator.

你们知道，在热机中，热力学第二定律的作用，换句话说，就是给热量,转化为功的效率,施加限制,或在制冷剂中，对抽取热量,进行限制。

麻省理工公开课 - 热力学与动力学课程节选