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
Talk it over. Think it over. Let me know by the end of the week.
好好地谈一谈。好好地想一想。这个周末以前让我知道你的决定。
Thank you for your nice present.
谢谢你那么好的礼物。
What do you like about China?
你们喜欢中国什么呢？