Collogen
[医] 胶原
🗣️ 情景例句
I am an atheist.
我是一个无神论者。
Janet winked at her boy friend.
珍妮向男朋友眨眨眼。
By the end of next year, they will have finished work on the new stadium.
到明年年底，他们将把新体育场建成。