Nbcs
[医][=newborn calf serum]新生牛血清
🗣️ 情景例句
You should quit smoking, now!
你应该现在就戒烟！
Half a loaf is better then no bread.
半块面包亦胜无。
How do you do? My name is Fred Smith.
您好，我是弗雷德.史蜜斯。