Mutual aid was particularly popular among the poor and the working class.

互助会的模式在贫困及工薪阶层中尤为普及。

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In our first aid class, we practised on one another.

我们在上急救课时，相互充作练习的对象。

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In our first aid class, we practised on one another.

我们在上急救课时，相互充作练习的对象。

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