Be warned: You will read it and might weep.

提醒一句：你阅读它，可能会流泪。

youdao

If you're thinking of getting a dog, be warned —they take a lot of time and money.

如果你想养条狗，有话说在前头，那可既费时间又费钱。

《牛津词典》

Students will be warned three times.

学生将被提醒三次。

youdao

They should also be warned that cigarette smoking works with the alcohol in a way that further increases the risk of esophageal cancer.

VOA: special.2009.06.23

And I ask same car or not. Again, at this time imagine you to be warned.

我问这是不是同一辆车，这时还是得当心。

耶鲁公开课 - 死亡课程节选

Excellent. Okay. So, just to be warned, you might fall in love with the subject you do your UROP in.

所以先警告你们，你们可能会爱上,你们UROP所做的。

麻省理工公开课 - 化学原理课程节选

But be warned - to do this is to open a chocolatey can of worms.

BBC: Does chocolate give you spots?

But be warned, this is going to include some spoilers, so read at your own risk!

FORBES: 7 Big 'Man Of Steel' Plot Revelations - Spoilers Ahead

But be warned: This is much less of a pure play than a direct timberland purchase.

WSJ: Wealthy Investors Discover Timberland