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
Where was the house?
房子在什么地方？
I want to make a long distance call.
我想要打一个长途电话。
I must see the dentist now,nurse.
我必须现在就见牙科医生，护士。