Nbcs
[医][=newborn calf serum]新生牛血清
🗣️ 情景例句
This vacation is for you and me.
这是我和你的假期。
Are you living in a dorm this term?
本学期你是住在学校宿舍吗？
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。