His person, though muscular, was rather attenuated than full; but every nerve and muscle appeared strung and indurated by unremitted exposure and toil.

他然肌发达， 但与其说是丰满， 不如说是消瘦了。 但每一根神经和肌似乎都因持续不断暴露和辛劳而变得紧张和僵硬。

My feet, which had become accustomed to the indurated lava floor, suddenly rested upon a dust composed of the debris of plants and shells.

我已经习惯了坚硬熔岩地面，突然踩在了由植物和贝壳碎片组成灰尘上。