求翻译：　　莫高窟最初开凿于公元366年，经过不断开凿，使莫高窟成为集各时期世界上最庞大、内容最丰富、历史最悠久的佛教艺术宝库，同时也表现出历代劳动人民的杰出智慧和非凡的成就。是什么意思？

Mogao Grottoes was originally drilled in 366 AD, through continuous cut, the Mogao Grottoes set each period of the world's largest, most content rich, the oldest Buddhist art treasure, but also demonstrated the outstanding wisdom of the ancient working people and remarkable achievement.