B. u.
[医] 棱底向上
🧩 词语组成解析
[医] 单位
🗣️ 情景例句
It's raining cats and dogs.
真是大雨倾盆。
I think a joint venture would be beneficial to us both.
我认为合资经营对双方都是有利的。
In many ways, this is unfortunate for the poor actors who are required to go on repeating the same lines night after night.
这样一来，可怜的演员们可倒霉了。因为他们需要一夜连着一夜地重复同样的台词。