bilharziasis

例句：

1. 1. The bilharziasis is a rare and endangered species.
   这个物种是稀有且濒危的。
2. 2. The bilharziasis has been extinct for over 50 years.
   这种物种已经灭绝超过50年了。
3. 3. The bilharziasis is found only in a few small islands in the Pacific Ocean.
   这种物种仅在太平洋中的几个小岛上发现。