挂钥匙儿童 “挂钥匙儿童”指因为父母出去工作，所以放学后独自在家、无人照看的孩子。
我有一位祖母级的朋友，上周我们聊天时她说道自己从前就是一个挂钥匙儿童，这样其实好处颇多。
A grandmother friend I chatted with last week told me that she had been a latch-key child and there were lots of benefits.
很多孩子都是挂钥匙儿童，所以事故不断，我们听说一个小学上在做实验室严重烧伤，而他的哥哥当时就在旁边。
Many children are latchkey kids. Accidents are frequent; we heard of an elementary school student who badly burned himself in a science experiment, with his older brother watching.
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