Ncf
[医][=(polymorphonuclear)neutrophil chemotactic factor]（多形核）中性粒细胞趋化因子
🗣️ 情景例句
How do you know so much about fishing?
你对钓鱼怎么知道这么多？
How can he give us such a tedious lecture!
他怎么能做这么沉闷乏味的演讲。
She's a new student. She's American.
她是个新来的同学，是个美国人。