to be on sentry duty
放哨
1.哨兵;岗哨;步哨
2.看守,警卫
3.〈古〉望楼
1.在...设岗哨
2.站岗,放哨
1.a soldier who stands at the entrance to a place and guards it
1.There was a knock at the door and a sentry put his head in.
门上响了一声，一个哨兵把头伸了进来。
2.Convoys of armored vehicles and sandbagged sentry posts have turned the region into something of an armed camp.
装甲车的车队和沙袋哨所已经把该地区变成一个武装营地。
3.work with a partner, colleague, or friend to be your attention sentry during times when you need to go off the grid for half a day.
与一个拍档，同事或朋友来当你的“哨兵”，在那些你需要走开半天的时候。
4.For the plant had disappeared, and the king remained as melancholy and sad as ever, but the sentry said he had always been so.
国王仍然是忧郁和沮丧的。“不过他一直是这样。”哨兵说。
5.During the Cuban missile crisis, an air force sentry in Minnesota shot at a fence-climbing intruder and sounded the sabotage alarm.
古巴飞弹危机期间，一个载明尼苏达州的美国空军哨兵射杀一名攀爬围墙的侵入者并拉起破坏行动警报。
6.And yet standing sentry among the hordes Mr. Chen seemed a bit comical or his mission seemed the ultimate act of absurdity.
但在人群中放哨的老陈的存在似乎有些滑稽，或者说他的使命完全是荒谬的行为。
7.She did not enjoy killing a German sentry with her bare hands, but she was unsentimental.
她并不享受徒手杀死任何一个德国哨兵的过程，但她并不感情用事。
8.They are using some sort of scrambling device to deactivate our sentry guns as well.
他们还用一种干扰设备使我们的岗哨炮台失去了作用。
9.A few nights later, one of these carefully selected friends was on sentry duty.
一天晚上，正好是他的一个结义兄弟站岗。
10.This however is impossible in-game, as an Engineer can only build one sentry at a time.
然而在游戏中这是不可能的，因为游戏中一名工程师只能造一台步哨。