To get that glimpse of the nanocages researchers used cryo-electron microscopy.

为了一瞥纳米笼，研究人员使用了低温电子显微镜。

Perhaps nanocages like these could be used as containers for things like anti-cancer drugs or as ultra small vehicles to carry diagnostic molecules.

也许像这样的纳米笼可以用作抗癌药物之类的容器，或者用作携带诊断分子的超小型载体。

To give you a sense of just how small this nanocage is let's start with a single grain of salt, it's around 300 microns wide.

为了让您了解这个纳米笼到底有多小，让我们从一粒盐开始，它大约有 300 微米宽。