You should know how to do basic first aid.

你应该懂得如何实施基本的急救。

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Third, bring a first aid kit and know how to use it.

第三，带一个急救箱并知道如何使用。

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Third, bring a first aid kit and know how to use it.

第三，带一个急救箱并知道如何使用。

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