Ncf
[医][=(polymorphonuclear)neutrophil chemotactic factor]（多形核）中性粒细胞趋化因子
🗣️ 情景例句
It's a perfect day for a walk.
这可是一个散步的好天气。
I don't allow my children to play with toy guns.
我不让自己的孩子玩玩具枪。
An old watch, by contrast,
然而一只老掉牙的手表，