那个小男孩帮妹妹提了沉重的包。

The little boy gave his sister a hand with her heavy bag.

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The little boy gave his sister a hand with her heavy bag.

hand 的本义是"手",在这里用作动词,表示"用手帮助"或"亲手帮忙"。 give a hand 是固定搭配,意思是"帮忙、搭把手",表示提供帮助的动作。

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