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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！

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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