疟疾的病原物- - -疟原虫，已经对化学处理有了抗性。所以，通过杀蚊，即使有抗性的疟原虫也没有机会再侵染人了。
The malaria causing parasite, Plasmodium, has already developed resistance to chemical treatments. So by killing the mosquitoes, even the drug-resistance parasites never get a chance to infect people.
疟疾的病原物- - -疟原虫，已经对化学处理有了抗性。所以，通过杀蚊，即使有抗性的疟原虫也没有机会再侵染人了。
The malaria causing parasite, Plasmodium, has already developed resistance to chemical treatments. So by killing the mosquitoes, even the drug-resistance parasites never get a chance to infect people.
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