Annuluses
环面( annulus的名词复数 )
🗣️ 情景例句
I have a new math program, and I want to learn how to use it.
我有一个新的数学程式 我想学习怎样用。
A good book is a light to the soul.
好书一本，照亮心灵。
She really wishes her clock had rung.
她真希望今天早上她的闹钟响了。