translation.en: A couple years ago, a biologist at Harvard named Kevin Esvelt wondered what would happen if you made it so that CRISPR inserted not only your new gene but also the machinery that does the cutting and pasting.
translation.zh: 几年前，哈佛大学的一名叫做 凯文·恩斯福尔特的生物学家 探究如果不仅仅在 新基因中使用CRISPR， 在剪切复制机制中 也使用CRISPR，会发生什么情况。