During this mock exercise, water is used instead of chemicals to decontaminate people who play the role of survivors.

VOA: standard.2010.07.21

I will be posting code that you can play with, and I suggest you go through exactly this kind of exercise.

我给你一些你用的上的代码，我建议你们,多进行一些这种实验。

麻省理工公开课 - 计算机科学及编程导论课程节选

I just want to exercise or something I'll go and play soccer, basketball, dodge ball, things like that.

我想锻炼的时候我就去踢足球、打篮球、打躲避球，这一类的。

我喜欢运动 - SpeakingMax英语口语达人

Later in life, factors such as higher education, income and mental and physical exercise could play a part, she said.

BBC: Alzheimer's 'link' to small heads

Proper diet and exercise also play a role in your energy level.

CNN: Caffeinated moms drink up to keep up

He had claimed to be upset about a change in the prison regime which meant that while he was taking part in classes, others were allowed to exercise, chat or play pool, the jury heard.

BBC: Billy Spiller