三度烧伤破坏整层皮肤，无痛感，因痛觉感受器已随真皮全被破坏。

There is no pain, because the skin's pain receptors are destroyed.

youdao

三度烧伤破坏整层皮肤，无痛感，因痛觉感受器已随真皮全被破坏。

There is no pain, because the skin's pain receptors are destroyed.

youdao