It's just these hard dolerite balls that they find in the eastern desert, which is just a stone that's harder than granite.

他们发现的沙漠中的那些坚硬的辉绿岩球，这种石头比花岗岩还要硬。

The site was once a quarry used to extract the Whin Sill dolerite rock  which was used to construct Hadrian's Wall in this area.

该地点曾个采石场，用于开采用于造这区域的哈德良长城的辉绿岩（Whin Sill）。

The father, Abraham Hausman, originally was Huseman, was both a prosperous schooner owner, had an oystering business, and he was lucky that he owned land above a rich deposit of trap rock, hence the name Granite Village.

父亲亚伯拉罕·豪斯曼， 原本姓胡斯曼，既成功的双桅帆船船主，又经营着蛎生意， 而且他很幸运地拥有块位于富含辉绿岩矿藏之上的土地，因此这个地方被称为花岗岩村。