哨兵: sentry; guard的: 4次方是 The fourth power of 2 i ...值勤: be on duty布置哨兵值勤: set the watch值勤: be on duty◇值勤交通警 policeman on point duty; 值勤人员 personnel on duty哨兵: sentry; guard 在门口设一个哨兵 place a guard at the door; 哨兵不让没有通行证的人通过大门。 the guard won't let anyone through the gate without a pass.; 哨兵岗 picket post不值勤: off-hour; offhourr值勤, 公务: line of duty值勤;职责: duty值勤班: on duty值勤泵: duty pump; service pump; sewage broad irrigation pump值勤表: duty roster值勤簿: duty record值勤处: duty office值勤官: duty officer值勤舰: watch-keeper值勤旗: guard pennant值勤室: duty office; duty room值勤艇: duty boat; duty row boat; duty row(ing) boat标的值: target value金的值: time value of money幂的值: principal value of power前哨,哨兵: sentinel前哨兵: pawn a head; pawn ahead哨兵,步哨: sentry