Concavo-convex
a. 凹凸的, 一面凹一面凸的\\n[化] 凹凸的
🧩 词语组成解析
convex
['kɔn'veks]
adj. 凸的，凸面的;凸状;凸形;
🗣️ 情景例句
Please, sit down.
请坐。
We cannot proceed any further without receiving your thoughts with respect to the manner of payment.
我们如果不了解你们对付款方式的意见，便不能进一步检讨。
Unfortunately it will cost a lot of money.
遗憾的是，这要花很大一笔钱。