Annularity
n. 环状, 轮状
🗣️ 情景例句
Well, I'll tell Robbie.
好， 我告诉Robbie。
The doctor said it's just a slight infection, There's nothing to worry about.
医生说只是轻微的感染，不需要担心。
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。