But I feel the same thing often when my son brings his friends, maybe that I've known for a long time.

但我也感觉得到,尤其是我儿子带朋友回来时，也许我早认识了。

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For example, if your son got in a fight with his sister and you're very concerned about him,

例如，如果你的儿子跟他的妹妹打了起来，你对他很是担心，

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