U.
[医] 单位
🗣️ 情景例句
I'm as strong as an ox.
我像牛一样壮。
Better be the head of the yeomanry than the tail of the gentry.
宁作自由民之首，不为贵族之尾。
It was necessary, therefore, to invent instruments that neither slumbered nor slept.
因此，有必要发明一种仪器，既不打盹儿，也不睡觉。