pathogenic protozoan的用法和樣例：
例句
- Cryptosporidium, which belongs to enteric protozoan parasites of the phylum Apicomplexa, causes cryptosporidiosis in animals and humans.The disease was characterized by diarrhea.
隱孢子蟲(chóng)屬于頂復門(mén)胞內寄生機會(huì )致病性原蟲(chóng)，可感染人和多種動(dòng)物，引起以腹瀉為主要癥狀的隱孢子蟲(chóng)病，是危害全球的公共衛生問(wèn)題，至今仍無(wú)有效的控制和治療手段。
