英语语法分析

The larva is ingested by a water flea (cyclop), where it develops and becomes infective in two weeks.

幼虫通过水蚤（剑水蚤属）进入人体，在那里发育并在两周后带有感染性。

When a person drinks the water, the cyclop is killed by the acidity of the stomach and the larva is freed and penetrates the gut wall.

当人饮用这种水时，剑水蚤被胃酸杀死，幼虫则得以释放并穿透肠壁。