B. u.
[医] 棱底向上
🧩 词语组成解析
[医] 单位
🗣️ 情景例句
This is no small accomplishment.
这是非同小可的成就。
What is the total circulation of this newspaper.
这家报纸总发行量多少？
Hello. Can I speak to Zheng Jie, please?
喂，请找郑杰听电话。