Ndf
[医][=neutrophil diffraction factor]嗜中性粒（白）细胞衍生因子
🗣️ 情景例句
Shopping vouchers are ofter a good means of attracting customers.
购物优惠券是吸引顾客的好方式。
I buy some food on my way home.
我回家路上买些吃的。
Hello!
你好！