Coach too should have a knowledge of first aid.

教练也要有紧急救护知识。

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It shows that knowledge of first aid can make a real difference.

这表明懂得急救知识的确能发挥重要作用。

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It shows that knowledge of first aid can make a real difference.

这表明懂得急救知识的确能发挥重要作用。

youdao