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
Please inform him that Chen Gang was calling.
麻烦你通知他陈刚来过电话。
She is very well, thank you.
她很好，谢谢。
He was a model of a different kind of political leader.
他还是一个与从不同的政治领袖的典范。