B. u.
[医] 棱底向上
🧩 词语组成解析
[医] 单位
🗣️ 情景例句
I think it's about time we got going.
我想差不多是告辞的时候了。
I like to gaze at the setting sun in the evening.
我喜欢在傍晚观赏晚霞。
Fine! Why don't you get your things ready?
好极了！干吗还不把东西准备好？