n.原生动物；单细胞动物
The numbers of viruses and protozoa in water will always decrease with time and most rapidly at warm temperatures. 水中病毒和原生动物的数量通常会随时间减少并且在暖温下减少的十分迅速。
In addition, there are infections by protozoa and infestations of pubic lice and scabies. 另外，还有一类由阴虱和螨虫引起的原生动物和害虫类。
n.原生动物
原生动物
