石头不会腐烂，所以这些很久前的工具已经存在了相当长的时间，甚至制造这些工具的人尸骨都已经消失的毫无痕迹。

Stone dows not decay, and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.

youdao

石头不会腐烂，所以这些很久前的工具已经存在了相当长的时间，甚至制造这些工具的人尸骨都已经消失的毫无痕迹。

Stone dows not decay, and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.

youdao