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 hope you won't take offense if I ask you not to smoke.
如果我请不你要吸烟，希望你不要生气。
To push a baby carriage
推婴儿车
It was very dark, so they turned on a torch.
饭厅很暗，于是他们打开了手电筒。