Sentry duty
na. 步哨勤务\\n
🧩 词语组成解析
sentry
['sɛntri]
n. 哨兵;警卫;
🗣️ 情景例句
I would like to mail this package.
我想把这包裹给寄了。
I remember the girl whose father goes there every summer.
我记得那个女孩的父亲每年夏天都去那里。
Not at all.
不用谢。