在过去的60年里，抗生素比如青霉素在控制传染病方面有着关键性的作用，但是细菌对现有的药物的耐药性也越来越强大。
Antibiotics such as penicillin have been key to the decline of infectious diseases over the last 60 years, but bacteria are becoming increasingly resistant to existing drugs.
虽然计算机越来越强大，但它们不能取代人类：它们只起补充作用。
As computers become more and more powerful, they won't be substitutes for humans: they'll be complements.
虽然计算机越来越强大，但它们不能取代人类：它们只起补充作用。
As computers become more and more powerful, they won't be substitutes for humans: they'll be complements.
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