translation.en: Bier said that he and his grad student Valentino Gantz had stumbled on a tool that could not only guarantee that a particular genetic trait would be inherited, but that it would spread incredibly quickly.
translation.zh: 比尔说他和他的研究生瓦伦蒂诺·甘茨 无意中发现了一种工具， 不仅可以保证特定的基因会被遗传， 而且基因传播的速度难以置信的快。