pyramidal tract

例句：

1. 1. The pyramids in Egypt area wonder of ancient civilization.
   埃及的金字塔是古代文明的奇迹。
2. 2. Thepyramids were builtby the ancient Egyptians astombs for their pharaohs.
   古埃及人建造了这些金字塔作为他们的法老的陵墓。
3. 3.The pyramids are still standing today, a testament to the skilland ingenuity of the ancientbuilders.
   金字塔至今仍然屹立不倒，证明了古建筑工人的高超技艺和智慧。