Lef
[医][=leukokinsis-enhancing factor]白细胞移动增强因子
🗣️ 情景例句
Where do you go to school?
你在哪里上学？
May I ask you a question?
我可以向您提个问题吗？
I Know. That's a good idea! said Ann. But in England we still make tea in teapots.
“明白了。是个好主意！”安说，“但是在英国我们仍用茶壶泡茶。”