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
Hello, ASPCA.
喂，ASPCA。
What's the best price you're prepared to offer for your product?
你们的产品最优惠的价格是多少呢？
What is it? asked the man.
“什么事？”楼上人问。