noun🔗Share哨兵，卫兵 A guard, particularly on duty at the entrance to a military base."The sentry at the gate of the military base saluted the approaching car. "军营大门口的哨兵向驶近的车辆敬礼。militaryjobpersonpositionwarChat with AIVocabulary GamePractice Reading
noun🔗Share站岗， 哨岗时间 Sentry duty; time spent being a sentry."The soldier's sentry duty was long and tiring. "士兵的站岗时间又长又累人。militaryjobChat with AIVocabulary GamePractice Reading
noun🔗Share沉底雷, 水雷 A form of drag to be towed underwater, which on striking bottom is upset and rises to the surface."The fishing boat used a sentry to help locate the bottom of the lake. "渔船使用一种沉底雷来帮助确定湖底的位置。nauticalmilitaryweapondeviceChat with AIVocabulary GamePractice Reading
noun🔗Share岗楼，哨楼。 A watchtower."The school's new sentry tower provides a good view of the playground. "学校新建的岗楼可以很好地观察到操场的情况。militarybuildingarchitecturepositionChat with AIVocabulary GamePractice Reading
