flatworms parasitic in the blood vessels of mammals
双语例句
On the other side of the Atlantic, the damming of African rivers has led to the spread of human blood flukes that depend on snails as a host and cause human schistosomiasis. 在大西洋的另一边，由于非洲河川建了水坝，导致以螺类为寄主的人类血吸虫到处散播，引发人类的血吸虫病。
