Ncf
[医][=(polymorphonuclear)neutrophil chemotactic factor]（多形核）中性粒细胞趋化因子
🗣️ 情景例句
That's right. Grandpa hangs it there for good luck.
是的。爷爷把它放在那儿 以求好运。
He came to give us a talk yesterday.
他昨天给我们作了一次演讲。
I've got too much work to do.
我要做的工作太多了。