Concaveness
n. 凹面, 成凹形
✅ 同义词
🗣️ 情景例句
I don't think I've had the pleasure.
我想我未曾有幸遇见过你。
We're looking for a house to rent for the summer.
我们正在寻找一幢夏天租的房子。
The children compete against each other to reach the other end of the pool.
孩子们比赛看谁先到达游泳池的另一端。