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
That's important for us.
这对我们很重要。
And the problems that some of us have had in the past year.
和去年我们一些人遇到的问题。
He looks young,too.
他看上去也很年轻。