1. HIV has proven to possess an ability to mutate into drug-resistant forms. 艾滋病病毒经证实能突变成抗药型病毒。
2. Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date. 即使在感染你的时候，感冒病毒也会发生变异，而且新的病毒毒株经常出现，以至于当制药商研制出针对其中一种变异的疫苗时，血清已经过时了。
3. Overnight, the gossip begins to mutate into headlines. 一夜之间，流言蜚语开始变成头条新闻了。
4. To mutate breeding with Penicillium chrysogenum in existing production in order to obtain stable high yield strain. 对现有生产中的产黄青霉进行育种突变，以获得稳定的高产菌株。
5. The virus did not mutate to a more virulent form. 病毒没有变异为致命性更强的形态。
