资讯
Scientists might be closer to learning who invented the wheel after discovering stone spindle stabilizers in Israel that date back 12,000 years. That makes these rolling stones 6,000 years older ...
form a similar wheel-and-axle-like device to help the spindle rotate faster and longer, enabling it to efficiently gather up fibers such as wool or flax and spin them into yarn. The stones studied ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果