Concave mirror
凹镜
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
🗣️ 情景例句
I care.
我关心。
He has a writig brush.
他有一支毛笔。
People are not so honest as they once were.
人们不再像以前那样诚实了。