translation.en: There's no reason why we shouldn't start now.  Number three -- isn't this stuff cool?  A new global epidemic. People have been at war with germs ever since there have been people, and from time to time, the germs sure get the upper hand.
translation.zh: 没有理由不立即开始嘛！ 第三点——这个酷吧？ ——一个新的全球性传染病。人类自从诞生之时开始， 就不断与细菌做斗争， 而且常常是细菌占了上风。