Colloidin
[医] 胶(体)变(性)质, 胶体素
🗣️ 情景例句
You've got lots of time to improve your English.
你已经花了好多时间去提高你的英语水平。
What track does the Metroliner leave from?
华纽特快从第几轨道开出？
After I had sat down, he said that business was very bad.
待我坐下后，他说生意非常不景气。