驱动轴
In 2002, a robot crawled to the stone in the end of the shaft and boldly drilled a hole in it, transmitting live images so the entire world could witness the moment of unveiling.
BBC: 3D interactive journey into the Great Pyramid of Khufu
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。