He is the man on watch.

他就是那个值班的人。

youdao

The man on watch didn't notice the danger.

值班的人没有注意到这危险。

youdao

Suddenly the man on watch shouted, "look out!"

忽然，值班的人高声叫喊：“当心，冰山！”

youdao

The next day, at their school, the woman asks the man to keep an eye on, or watch the young students in her class while she is out of the classroom.

VOA: special.2009.09.06

Also,the effectiveness of such watch lists is being called into question, as the man charged with trying to bring down flight 253 on Christmas Day was not on the U.S.'no fly' list.

VOA: standard.2009.12.28

Confined to his home on the Isle of Man for the latter part of his life, the man who put England back on the watch making map was critical of his own industry and chose but one apprentice (Roger Smith).

FORBES: Connect

The man also had a watch on his left wrist, which is described as having a white metal strap and a black oblong face.

BBC: Glasgow & West Scotland

Time is indicated by chimes, and rather than hands, intricately enameled dials depict a girl chasing a kite across Paris on one watch, while a love-struck man watches a shooting star over the Eiffel Tower on the other.

WSJ: Keeping Time With Master Watchmakers