Earlier studies found water in glass beads formed by volcanic activity on the moon.

早期的研究发现，月球上的山活动形成的玻璃珠中含有水。

Also, in terms of ancient stone tools, they're gonna use things like obsidian, it's volcanic glass.

此外，就古代石器而言，他们黑曜石，这是山玻璃。

Found in modern day Turkey, these primitive mirrors were made out of a polished volcanic glass called obsidian.

在现代的土耳其发现，这些原始的镜子是由一种叫做黑曜石的抛光山玻璃制成的。

The villagers harvested wheat, raised animals and used simple tools made of bone and volcanic glass.

村民们收割小麦，饲养动物，并由骨头和山玻璃制成的简单工具。

Earlier studies found water in glass beads formed by volcanic activity on the moon. Those studies used material collected on the moon by American astronauts more than fifty years ago.

早期的研究发现，月球上的山活动形成的玻璃珠中含有水。这些研究了50多年前美国宇航员在月球上收集的材料。