Even if he bores you stiff, it is good manners not to let him know it.

即使他把你烦透了，出于礼貌你也不能让他看出来。

《柯林斯英汉双解大词典》

"I will not let anyone know where I go," he answered.

“我不会让任何人知道我去哪里的。”他回答。

youdao

Prithee let me see my brother Arthur—he will know me; he will know me and console me.

请你让我见见我的哥哥亚赛吧——他会认得我的；他会认得我的，还会安慰我。

youdao

"I am happy." he said, "that I was the first one to open the door -- to let everyone know we could all do it."

VOA: special.2010.03.07

Milton's taking pains here, and he does this with very few other poems, to let us know precisely when it is that he's written it.

弥尔顿在这里极力想让我们，知道他确切的创作时间。

耶鲁公开课 - 弥尔顿课程节选

So it could be--From Hannibal's point of view he doesn't know which pass you're going to defend, but let's have a look at his payoffs.

站在汉尼拔的立场,他应该,不知道你会防守哪条路,但让我们看看他的收益

耶鲁公开课 - 博弈论课程节选

When he let Weber State know he was going pro, Lillard announced his first goal was to win Rookie of the Year.

NPR: Damian Lillard Is NBA Rookie Of The Year

Finally the attorney suggested the other guy and I write something and he would let us know if he liked it or not.

FORBES: Women and Overperforming: Don't Go for the Bait

The McCourts let Porter know he was being let go after 28 years by leaving a message on his answering machine!

FORBES: Strike Three: Frank McCourt and the Los Angeles Dodgers File for Bankruptcy