translation.en: But if it could occur in just a few years, then it might be a very important way to control some of the nasty problems that we haven't been able to control.
translation.zh: 但如果这能在仅仅几年中就奏效 那么它也许就是一个非常重要的控制途径， 来控制那些我们没有控制住的严重的问题。