释义：
let somebody stay 让某人留下来
虽然不能称得上是短语，但在日常生活中经常会使用到。不是我自己做什么，而是让 somebody 留下来，即挽留的意思。
例句：
Will you please let her stay with me?
你能让她留下来陪我吗？
We'll just let her stay for a month.
我们打算让她待一个月。
If you let her stay here, she will stay forever.
如果你让她留在这，她就会一直待下去的。
对话：
A: Frank has been living at his uncle's house.
弗兰克一直住在他叔叔家里。
B: His uncle let him stay in the spare bedroom.
他叔叔让他住在一间多出来的卧室里。