WPARs: How and when to use them

WPAR：使用方式及使用场合

youdao

I know when to listen to it and when to use it.

我知道什么时候该聆听它，什么时候该利用它。

youdao

We explained when to use the agent and when to use the service.

阐述了何时使用代理以及如何使用服务。

youdao

For instance,even native speakers are often not sure when to use "lie" and when to use "lay."

VOA: special.2010.02.11

The Psalmist is going to use this motif when he denounces social injustice, exploitation of the poor and so on.

赞美诗的作者，也常常借用这种思想,谴责社会不公正，对穷人的剥削。

耶鲁公开课 - 旧约导论课程节选

All of these systems we can call "languages," and "language"--that is to say, the words that we use when we speak to each other is one of those systems.

这种系统我们称为语言“,也就是说，是关于我们说话用语的研究,关于那个系统的研究。

耶鲁公开课 - 文学理论导论课程节选

We are supposed to collect coupons, store them, understand how and when to use them, understand how they can be combined etc.

FORBES: The Startups That Will Change Our Lives

The trick is knowing which ratios work and when to use them.

FORBES: One ratio does not fit all

This must be complemented with measures to foster demand for quality health care to ensure families and communities are aware of life-saving medicines, know how to access them, and understand how and when to use them.

FORBES: The Missing Link: Reaching the Poorest Children with Life-saving Commodities