sentry
US /ˈsen.tri/
UK /ˈsen.tri/
名词
1.
哨兵
a soldier who guards a place, usually by standing at its entrance:
示例:
•
My squad were on sentry duty last night.
在 Lingoland 学习这个单词
哨兵
a soldier who guards a place, usually by standing at its entrance: