Lef
[医][=leukokinsis-enhancing factor]白细胞移动增强因子
🗣️ 情景例句
Good night, Harry. It was nice meeting you. Harry
很高兴与你见面。
This product is doing very well in foreign countries.
这种产品在国外很畅销。
Yes, they are.
是的，他们也是。