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

VOA: standard.2010.07.21

And play in the water.

在海水里嬉戏，

It's important 课堂 - SpeakingMax英语口语达人

And play in the water.

在海水里嬉戏，

It's important 课堂 - SpeakingMax英语口语达人