Concavely
[建] 凹的
🗣️ 情景例句
Fifteen minutes! Thank you. Good-bye.
十五分钟 ！谢谢 。再见。
Why don't we go to the office now?
为何我们现在不去办公室呢？
He broke his words once again.
他又一次违背了诺言。