Osseine
[医] 骨胶原
🗣️ 情景例句
How was your day?
今天好吗？
I cannot hear the tape.
这卷录音带什么都听不到。
I spent the whole day in my room, but I did not write a single card!
我在房间里关了整整一天。然而竟连一张明信片也没写成！