Agriculture had taken over most of the fertile river valleys that the species depends on, and the survivors were under relentless assault by trophy hunters and poachers.

当时，农业土地侵占了它们赖以生存的肥沃河谷，而且幸存的犀牛还遭到猎手和偷猎者的无情捕杀。

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Its assault on humans has been relentless, especially among African children.

CNN: Researchers say they found malaria's origin: In chimps