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
And don't ever forget it.
永远别忘记这一点。
Has he studied French very long?
他学习法语很长时间吗？
Then, send two cases please.
这样的话，就送两箱吧。