niln.无；零Nilandron是一种抗肿瘤药(含nilutamide)Nilovaara尼洛瓦拉niloscopen.水位计Nilssonia尼尔桑属nil waste零浪费nilotoxin草木犀毒素, 双香豆精nil dicit无答辩nil profit无利润nilpotents幂零元niludipine尼鲁地平