The Egyptian pyramids were built around 2 560 B.C.
埃及的金字塔大概建于公元前2560年。
The largest one of them is the Great pyramid of khufu.
其中最大的是胡夫金字塔。
It is one of the seven wonders of the world.
它是世界七大奇观之一。
The king, khufu, built the Great pyramid as his tomb.
胡夫国王建造该金字塔作为自己的坟墓。
Studies show that it took 100 000 people over 20 years to complete it.
研究表明它由10万人花费20多年时间建造而成。
The Great pyramid was considered a unique building in the 19th century A.D.
公元19世纪，大金字塔被认为是很独特的建筑。
At the time, it was still the tallest building in the world.
那时候，它还是世界上最高的建筑。
According to scientific research, the ancient King, khufu, ordered his men to build the Great pyramid stone by stone.
科学研究表明，古代国王胡夫下令让他的手下一块石头一块石头的建造了大金字塔。
The biggest stone weights as much as 15 tons.
最大的石头重达15吨。
Each stone was fixed so well, though the ancient workers didn't have any modern tools.
虽然古代工人并没有现代的工具，但每一块石头都放置的极好。
The Great pyramid has four sides and each side is 230.4 meters long and 146.5 meters high.
大金字塔共有四面，每一面都长230.4米，高146.5米。
At that time, there were no modern machines or equipment, so how did the ancient Egyptians build the Great pyramid?
那时候并没有现代的机器或设备，那么古代埃及人到底是如何建成金字塔的呢？
To this day, it is still a mystery.
直到今天，这仍然是个谜。
But many scientists continue to study their methods.
但是很多科学家还在研究他们的方法。
The completion of the Great pyramid shows the wisdom and the achievements of ancient Egyptian working people.
金字塔的建造证明了古代埃及工人智慧和成就。
