例如，中国人已经注意到，地震之前鸡的行为有异常：它们夜晚不肯进笼。
For example, the Chinese have noted that before an earthquake, hens' behavior changes - they refuse to enter their cages at night.
那个女孩的不良行为使得她的父母许多夜晚睡不着。
The girl's bad behavior cost her parents many sleepless nights.
那孩子的不良行为使得他母亲许多夜晚睡不着。
The boy's bad behaviour cost his mother many sleepless nights.
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