They held him for three hours and they let him go.
他们扣押了他3个小时才放走他。
《柯林斯英汉双解大词典》
2
We won't let the house gofor less than $200 000.
这房子低于20万元我们是不会卖的。
《牛津词典》
3
For individual companies, the temptation is always to letgo of workers whose skills are no longer in demand and replace them with those whose skills are.