Concavoconcave
[醫] 對凹的, 雙凹的
??? 情景例句
I can't understand modern art, to me it look like rubbish.
我不能理解現代藝術，對于我來說，那些東西簡直就是垃圾。
Few words, many deeds.
少說話，多做事。
How long have you worked in this factory?
你在這家工廠工作有多長時間了？