U-boat
n. 潜水艇
📖 牛津释义
U-boat
n
(esp in World War II) Germansubmarine （尤指第二次世界大战中的）德国潜艇.
🧩 词语组成解析
boat
[bot]
n. 小船，小艇;轮船;
vi. 乘船，划船;
vt. 用船运输;用船装运;
🗣️ 情景例句
a group of caring Riverdale citizens gathered
一群热心公益的Riverdale居民聚集在一起
You'd better go and see a doctor about that.
关于那个毛病，你最好去看医生。
If it is not a question of resting the body, then perhaps it is the brain that needs resting? This might be a plausible hypothesis were it not for two factors.
如果睡眠的功能不是在于使身体得到休息，那么也许是让大脑得以休息？若不是下面两点，这种假使似乎是有道理的。