Retothelium
[医] 网织上皮
🗣️ 情景例句
What's the matter, Susan?
怎么了， Susan？
Two dogs strive for a bone, and a third runs away with it.
鹬蚌相争，渔翁得利。
It was an important part of Native American's existence.
野牛是美洲土著人赖以生活的重要部分。