Concaveness
n. 凹面, 成凹形
✅ 同义词
🗣️ 情景例句
Well, are you going to tell me what's on your mind, Harry?
好了， 你要不要告诉我你在想什么， Harry？
I'm sure I've forgotten something ,but it's too late now.
我肯定我忘记了一些东西，但是它现在是太迟了的。
If I continue to play a lot of concerts over the next five year.
如果在今后的五年内我连续举办一些音乐会。