Pyramids' Blocks:Possibly Rock "n" Rolled

• 来源期刊: 中学科技
• 年，卷（期）: 2015,（1）
• 所属期刊栏目: 科普英语
• 页码范围: 28
• 页数: 1页
• 语种: 中文

摘要

No one knows for sure how the ancient Egyptians built the pyramids that rise high above the desert near Cairo.But a new study suggests they used a little rock "n" roll.Long-ago builders could have attached wooden posts to the stones and rolled them across the sand,the scientists say.