please do me a fevor of translating one sentence from english to chinese!

问题描述:

please do me a fevor of translating one sentence from english to chinese!
But in some animals,certain muscle cells have become so specialized as electrical generators that they do not work as muscle cells at all.

但一些动物的某些肌肉细胞能转化成一个个发电机,以致完全失去肌肉细胞的功能.