Toot your horn to let them know we're here.

按按喇叭，告诉他们我们到了。

《牛津词典》

They want to let them know that they are safe.

他们想让他们知道，他们很安全。

《柯林斯英汉双解大词典》

They none of them know one half as much as intelligent Mr. Toad!

他们谁也没有聪明的托德先生懂得一半多！

youdao

"And so, what we're trying to let them know is that we want to have a successful U.S.auto industry.

VOA: standard.2009.03.30

I would just let them know that primarily Muslims are just like any other people. We go out, we go to restaurants, we watch movies, we watch TV, we engage in the same activities as everyone else would.

我只想让他们知道,穆斯林和其他人都是一样的，我们出去玩，去餐馆吃饭，看电影，看电视，我们和其他人所做的事情一样。

普林斯顿公开课 - 人性课程节选

and let them know where they are going to be at so they can take photos of them.

告诉他们自己要去哪儿，好让狗仔队拍照片。

溺爱是一种伤害 - SpeakingMax英语口语达人

Let them know about the choice we face in this election, because there is a choice.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event

Let them know there are park rules, just as there are rules at home.

CNN: A theme park survival guide

First Spark reaches out to communities and lets them know that funds are definitely available.

FORBES: Saving the World on a Shoestring: Spark MicroGrants