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
It was so nice to be out in the country.
出去置身乡下真是太好了。
You have to be operated on.
你得做手术。
It sounds like you enjoyed it.
听起来你好象蛮喜欢的。