translation.en: when we're thinking about stem cells is that obviously stem cells can be many different things, and they want to be many different things, and so we want to make sure that the environment we put them into has enough information so that they can become the right sort of specialist tissue.
translation.zh: 我们在想到干细胞的时候， 有非常重要的一点， 就是干细胞显然可以变成很多不同的东西， 并且也希望它们能长成不同的东西， 所以我们要确保放干细胞的环境中 有足够多的信息， 这样它们才能发育成我们想要的 那种特定的组织。