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All the children have flown the nest so Mum now has a lot of spare time. 所有孩子都独自生活了，所以现在妈妈有了很多空闲时间。 讲解： 短语 fly the nest 的意思是一个人离开父母开始自己独立的生活。 A nest egg 的意思是存款、储备金。 Jane is going to use her nest egg to buy a big house by the sea. Jane打算用她的存款在海边买一栋大房子。 | 
