They set off, two men out in front as scouts, two behind in case of any attack from the rear.

他们出发了，两人在前作为侦察员，两人殿后以防后方攻击。

《柯林斯英汉双解大词典》

With the blurring of roles, and the fact that the home front lags well behind the workplace in making adjustments for working women, it's not surprising that women are more stressed at home.

随着角色的模糊，以及家庭为职业女性做出的调整远远落后于工作场所的事实，女性在家承受更多压力也就不足为奇了。

youdao

If you know someone is coming up behind you to attack, turn toward the person with your hands up in front of your body and loudly say "stop" before walking away.

如果你知道有人从你后面走过来要攻击你，把手举到身前，转身大声说“停”，然后走开。

youdao

As for Eastwood, in his five-plus decades in the film business, he has scored--both in box office grosses and award show acclaim--for his myriad roles in front of and behind the camera.

FORBES: Magazine Article

First, these are undoubtedly the opinions that appealed most to the caucus-goers of Iowa when they placed him in second place behind Mr Romney, the front-runner in the nomination race.

ECONOMIST: Lexington

Each neuron has a long fiber, or axon, that stretches upward through a tiny opening in the bone above it and into the olfactory bulb, a plum-size mass in the front of the brain, behind the forehead.

FORBES: Magazine Article