Ndf
[医][=neutrophil diffraction factor]嗜中性粒（白）细胞衍生因子
🗣️ 情景例句
What are you talking about?
你在说什么呀？
The newsboy throws his papers in the wrong place.
报童把报纸投错了地方。
Is it behind her chair?
在她的椅子后面吗？