There is a catch, though: a process called biofouling, in which foreign objects implanted in the body become encrusted with proteins and tissue.

被称做生物污垢，即被移植进人体外来物会嵌入蛋白质和组织中。

Dr Sarpeshkar also has a novel solution to the biofouling problem: implant the fuel cell in the cerebrospinal fluid (CSF) surrounding the brain.

另外，Sarpeshkar博士还有一个针对于生物燃料题新型解决方法：在大脑周围脑脊液（CSF）中植入能量池。

Some years I'll get biofouling, like sea squirts and things will stick to it really early, which really affects whether I can use it for food.

有几年我会被生物污染， 比如海鞘，西很早就会粘在上面，这真会影响我是否可以用它做食物。

And if the kelp has got a lot of biofouling on it, that's really good for the land-based farmer, because it's packed full of these micronutrients and nitrogen and carbon.

如果海带上有很多生物污垢，那对陆上农民来说真很好，因为它充满了这些微量营养素以及氮和碳。