Collogen
[医] 胶原
🗣️ 情景例句
I Wonder whether they will arrive on time.
我也不知道他能不能准时到。
The tortoise wins the race while the hare is sleeping.
兔子睡大觉，乌龟跑第一。
Yes, that is the best we can do.
是的，这是我们的最低价了。