Something that is sterile is completely clean and free from germs. 无菌的
adjective [原级] 无生殖能力的，不育的；无菌的，消过毒的；（争论或讨论）毫无新意的，无结果的；（建筑、房间等）呆板的，乏味的；（土地）贫瘠的，不长作物的
He always made sure that any cuts were protected by sterile dressings. 他总是确保所有伤口都用无菌的敷料包好。
