stand guard

基本解释

A line of young soldiers, their faces covered by blue masks against the stench of decomposing bodies, stand guard.
一队年轻的士兵正站立着，为了防止尸体分解的刺鼻味道，脸上都带着蓝色的口罩。
By mid-2007, it was much more likely that a given detainee had been at least a low-level threat — for example, someone paid to stand guard for insurgents.
到2007年中期，任何一个特定的拘留者却看起来至少也是个低度的威胁——比如，有人付了钱去为叛军站岗。
So as I watch Barack take that oath, I'll be thinking especially about those members of our American family who stand guard across the world and the loved ones who await their safe return.
所以当我看着巴拉克宣读这个誓言，我会特别想起那些在世界各地为我们站岗守卫的美国家庭的成员和他们那些等待他们安全回家的亲人。

Two four-meter-tall sculptures stand guard on either side of a door.
I'm going to go guard the Queen and stand outside the palace in my tunic.
我要去守卫女王，穿着制服站在宫殿外。
英国的军人 - SpeakingMax英语口语达人

Typically, they are allowed to go into the meeting rooms as soldiers from both Koreas stand guard.
NPR: NKorean Soldiers Put Down Arms To Help Plant Crops
Riot police stand guard at many intersections, some of them carrying bayoneted rifles.
ECONOMIST: Tension in Xinjiang