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，他会使用黑曜石，这是火山玻。

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火山玻的。

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

收割小麦，饲养动物，并使用由骨头和火山玻的简单工具。

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

早期的研究发现，球上的火山活动形的玻珠中含有水。

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，球上的火山活动形的玻珠中含有水。这些研究使用了50多年前美国宇航员在球上收集的材料。

Shipton's team's excavation of the shelters at the Kelo site unearthed a volcanic glass substance called obsidian, which must have been brought over from another island, as there is no known source on Obi.

希普顿的团队对 Kelo 遗址的避难所进行了挖掘，发现了一种叫做黑曜石的火山玻物质，它一定是从另一个岛屿带来的，因为 Obi 没有已知的来源。