B. u.
[医] 棱底向上
🧩 词语组成解析
[医] 单位
🗣️ 情景例句
We should revise our protectionist practices in trade, and promote free trade and competition.
我们应该修改我们的贸易保护主义做法，推广自由贸易和竞争。
What time do you think it is?
你以为现在几点？
Brevity is the soul of wit.
简洁是智慧的精华。