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》

Sometimes, when I have finished my work and they let me, I amuse myself, too.

有时候，我做完了事，人家准许的话我也玩。

youdao

When we came to the Tower of Serpents we gave them warm milk in bowls of brass, and they let us go by.

而当我们过蛇塔的时候，则奉上了黄铜碗盛的温牛奶，得以顺利走脱。

youdao

And they let others know it. They sometimes made statements about how they did not have to obey the law.

VOA: special.2010.02.25

These two relations involving entropy are also useful because they'll let us see how entropy depends on volume and pressure.

这两个涉及熵的关系也非常有用,因为他们告诉我们,熵和体积，压强的关系。

麻省理工公开课 - 热力学与动力学课程节选

So now, let's get a sodium here, and the chloride ion next to it to the point where they are touching.

所以，我们要有一个钠离子，和氯离子放在,相互接触的一个点上。

麻省理工公开课 - 固态化学导论课程节选

They thought that he was wasting his time, and they let him know it.

NEWYORKER: Silence, Exile, Punning

And they opened up a church that was over there, and they let us in.

NPR: Gulfport Takes Stock of Disaster

"Eventually, in my burqa, I convinced them I was their long-lost aunt, and they let me in, " she said.

BBC: Kandahar's woman detective