1) The sentries were all on the alert.
哨兵们都警戒着。
2) The soldiers were ordered to keep watch.
士兵们奉命警戒。
3) to keep sentry
警戒,放哨
4) radar picket
雷达警戒哨
补充资料:哨兵
1.旧时巡逻﹑稽查的士兵。 2.执行警戒任务的士兵。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条