What's so unique about cardiac muscle fibers is that they can contract on their own, even if the nerves to these muscle fibers are severed.

心肌纤维的独特之处在于它们可以自行收缩，即使这些肌肉纤维的神经被切断。

As it turns out, the cells of the heart muscle, otherwise called cardiac muscle fibers, have a unique ability that makes them unlike any other muscle cells in your body.

事实证明，心肌细胞，即所谓的心肌纤维，有一种独特的能力，使它们不同于身体中的任何其他肌肉细胞。