Concaving
v. 凹的( concave的现在分词 ); 凹地; 凹面, 成凹形
🗣️ 情景例句
Well, you have your own tuxedo.
噢， 你有自己的燕尾服。
He is attending a morning intensive course four hours a day, six days a week.
他每周六早晨都上一门4小时的速成课。
Tramps seem to be the only exception to this general rule.
在这条普遍的规律前面，