an observation tower for a lookout to watch over prisoners or watch for fires or enemies
watchtower例句
The watchtower followed the aircraft by radar.
了望塔通过雷达追踪这架飞机的飞行。
watchtower详细解释
watch.tow.er n.（名词）An observation tower on which a guard or lookout is stationed to keep watch, as for enemies, for forest fires, or over prisoners.观望塔：哨兵或观望员被安置其上以警戒如敌人、森林火灾或犯人的岗楼
