One day when I was home alone a parcel was left at the door I opened it and there was a box.
一天，我独自在家，在门前发现了一个包裹，我打开一看，是一个盒子。
Parents spend less time with their children, who may be left alone at home for longer. Is it just a coincidence that juvenile crime is on the rise?
美国青少年犯罪现象上升与父母在家时间少有联系，因而它可能是人们工作时间延长的一种后果。
It is dangerous for children under five years old to be left alone at home.
把五岁以下的儿童独自留在家里是很危险的。
It is dangerous for children under five years old to be left alone at home.
把五岁以下的儿童独自留在家里是很危险的。
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