translation.en: The surfactants -- which are like things we use on fast food wrappers -- they grab around the droplets of oil, and they make little, tiny droplets with nice, little surfactant edges to them.
translation.zh: 表面活性剂 - 就是我们 涂在食物包装纸上的东西 - 能够抓住油滴， 从而在细小的油滴外 形成薄薄的 表面活性剂层。