The cashiers were asked to watch out for forged banknotes.

出纳员接到要求，要注意伪钞。

《牛津词典》

Watch out for falling rocks!

小心落石！

youdao

Watch out for what's next.

注意接下来要发生的事。

youdao

Road signs warn drivers to watch out for moose, big animals that can walk into the road.

VOA: special.2009.01.05

If you put your fingers between the plastic opening at the bottom, and here's where you gotta watch out for the spring, pull the thing apart and that's it.

如果你把手指放到,底部的缝隙中间，这里你需要小心，你剥开就会发现这个了。

哈佛公开课 - 计算机科学课程节选

Bad weather has interfered with efforts to send out boats to clean up the oil and watch for the effects on wildlife in the Gulf of Mexico.

VOA: special.2010.05.04

Here are a couple of trends to watch out for in the coming quarter.

FORBES: Starbucks Global Growth And New Products Can Support Earnings

You want to especially watch out for staffing expenses which can easily spiral out of control.

FORBES: You Want To Open A Restaurant; But Do You Have The Stomach For It?

And watch out for the amendment to bring caste within the scope of equality legislation.

BBC: Week ahead