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

他的人虽然肌发达， 但与其说丰满， 不如说了。 但每一根神经肌似乎都因持续不断的辛劳而变得紧张僵硬。

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

我的双脚已经习惯了坚硬的熔岩地面，突然踩在了由植物贝壳碎片组成的灰尘上。