Concaveness
n. 凹面, 成凹形
✅ 同义词
🗣️ 情景例句
There was a girl on the ferry.
在渡船上有一个女孩。
Because hs is thinking of majoring in this subject at the university.
因为他考虑把此学科作为在大学里的专业。
Money is not everything.
金钱不是一切。