I'll have a think and let you know tomorrow.

我要好好想一想，明天告诉你。

《牛津词典》

Could I sleep on it and let you know tomorrow?

能不能让我晚上考虑考虑，明天答复你？

《牛津词典》

If I feel like it, and have the time, I'll play with your beta and let you know what I think.

如果我喜欢这个应用，而且时间充裕，我会试试你们的测试版，然后反馈给你们。

youdao

And what programs like this do for the inmates, it was something that we said 'you know, let's make it into a documentary."

VOA: standard.2010.05.18

Now we're going to see a bunch of examples and I know those are words, let me give you an example.

让我们来看看例子吧,我知道那只是概念，来看个例子。

麻省理工公开课 - 计算机科学及编程导论课程节选

I hope you enjoy using Star Festival and do let me know the questions that you are trying to answer.

事情，我希望你使用“七夕“愉快并让我了解,你想找出答案的那些问题。

麻省理工公开课 - 媒体、教育、市场课程节选

What if your plants could talk and let you know when they need water?

FORBES: When Can Your Plant Talk? Mine Did Yesterday

Tools on your smartphone can help you find stations and let you know your battery status.

FORBES: 8 Tips For Avoiding Electric Car Road Rage

Upon arrival, a sharply dressed man will approach your party and let you know if you can be accommodated.

BBC: Philadelphia��s revived speakeasy scene