丝状虫

例句：

1. 1. The disease is caused by thefilarial parasite.
   这种疾病是由丝状虫引起的。
2. 2. The doctor treated the patient witha drug to kill the filarialparasite.
   医生给病人开了一种药物来杀死丝状虫。
3. 3. The research focused onthe impact of the filarial parasiteon human health.
   研究专注于丝状虫对人类健康的影响。