sentry
🇺🇸
/ˈsentri/
🇬🇧
/ˈsentri/
noun
R
someone who stands guard or watches over something
The sentry stood at the door, making sure only allowed people could enter.
哨兵站在门口，确保只有被允许的人能进入。
translation
哨兵
词形变化
Plural
sentries