Conicoid
n. 二次曲面
🗣️ 情景例句
I got fired.
我被解雇了。
I am sorry to keep you waiting.
真抱歉，让你久等了。
There were books, clothing and photographs, together with letters which the seaman had once received from his wife.
其中有书箱、衣服、照片以及水手收到的妻子的来信。