科学家首次证明，野生黑猩猩会因猿类艾滋病而患病甚至死亡。

For the first time, scientists have shown that chimpanzees in the wild become sick, and die from the simian version of AIDS.

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在社会不断进步的同时，环境问题也频频出现在了人们的视野里，由于环境污染而患病甚至死亡的人数也在不断增加。

With the development of our society, the problem of circumstance happens in our living more and more frequently. The number of people dead of pollution becomes higher and higher.

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帕金森氏症无药可治，患病初期会出现震颤，最终会瘫痪甚至死亡。

There is no cure for Parkinson's, which starts off with tremors and ends up paralyzing and often killing patients.

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