Bursitis
n. 黏液囊炎\\n[医] 粘液囊炎, 滑囊炎
🗣️ 情景例句
Thank you, Grandpa.
谢谢你， 爷爷。
The frog in well knows nothing of the great ocean.
井底之蛙不知汪洋大海。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，