U-boats
(U-boat 的复数) n. 潜水艇
🧩 词语组成解析
n. 船艇；船（boat的复数）
🗣️ 情景例句
Our date today was NATO(No Action, Talk Only).
我们今天的约会只说不做。
Do you often study history on Saturday?
你常常在星期六学历史吗？
Yes, he's on the phone. Is he expecting you?
在家，他在打电话。他是在等你吗？