A ferrofluid is a mix of oil and iron particles.

铁磁流体是油和铁颗粒的混合物。

And it has this ferrofluid over the surface of it.

它表面覆盖着这种铁磁流体。

If you want to check out another video on materials, be sure to check out our ferrofluid video.

想查看另一关于材料的，务必查看我们的铁磁流体。

So, we'll just go ahead and tell you it's a ferrofluid.

所以，我们会继续告诉你它是一种铁磁流体。

Because the particles inside ferrofluid are so tiny, they can seep inside cells, including cancer cells.

由于铁磁流体内的颗粒非常小，它们可以渗入细胞内， 包括癌细胞。

[Narrator] Webster and his team have tested ferrofluids mostly in mice.

- [旁白] 韦伯斯特和他的团队主要在老鼠身上测试了铁磁流体。

Ferrofluids have been around for decades.

铁磁流体已经存在了几十年。