原因是HIV病毒会产生抗药性。
癌细胞和细菌一样对药物会产生抗药性。
Tumor cells, like bacteria, can develop resistance to drugs.
在这种情形下，细菌可能就不会产生抗药性。
而且肿瘤细胞也可对多种化疗药物产生抗药性。
Moreover, the cancer cells may eventually develop resistance to multiple chemotherapeutics.
不适当的使用抗生素会产生具有抗药性的“超级病菌”。
The inappropriate use of antibiotics can lead to "superbugs" that resist drugs.
随着杀虫剂的研发和广泛使用，越来越多的昆虫对杀虫剂产生了抗药性。
Due to the wide use of insecticides, resistance of many insects increased quickly.
随着杀虫剂的研发和广泛使用，越来越多的昆虫对杀虫剂产生了抗药性。
Due to the wide use of insecticides, resistance of many insects increased quickly.
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