translation.en: So as a physician, what's just as interesting to me is that it's not just the color of materials that changes at the nanoscale; the way they travel in your body also changes.
translation.zh: 作为一位医生， 让我感兴趣的 不仅仅是材料的颜色 在纳米尺寸会改变， 它们在人体内运动的方式也将改变。