1·However, as often happens, evolution has got to work and generated drug-resistant strains of the virus by modifying its protease.
然而，通过病毒自身蛋白酶的转变，进化在发挥着作用，并产生抗药性的菌株，这是极为常见的。
2·An HIV strain resistant to all protease inhibitor drugs currently on the market turns up in San Francisco.
在美国旧金山，发现了一种对现有市场上的所有蛋白酶抑制剂都耐药的HIV病毒株。
3·Unusual side effects, such as the growth of fatty pads and heart problems, are occurring in some users of protease inhibitors.
一些使用蛋白酶抑制剂的患者出现不寻常的副作用，如脂肪增生和心脏问题。
4·Protease is a protein crucial to the life cycle of HIV, the AIDS-causing virus.
蛋白酶是一种蛋白质，对于引发AIDS的HIV病毒的生命周期至关重要。
5·But this new virus has a weak point called a protease, the researchers report in this week's issue of the journal Science.
但是研究者们在本周《科学》周刊中发表的报告中说，这种新型病毒有一个弱点，那就是蛋白酶。