He saw mountains casting shadows on the moon and realised this body was a world, like the Earth, endowed with complicated terrain.

他看见群山在月亮上投下影子，于是才意识到月球正如地球一般，也是一个地形复杂的世界。

youdao

Shortly afterwards he turned it on the skies. He saw mountains casting shadows on the moon and realised this body was a world, like the Earth, endowed with complicated terrain.

过了会儿，他举起望远镜，转向天空，看到了绵延的群山在月球投下的阴影，他猛然意识到这个天体是另一个“世界”，和地球一样，也被赋予了复杂的地形地貌。

youdao

Like the chained prisoners in the cave who think that the shadows are real things, they are condemned to believe that their notions of the world are reality.

正如被锁在洞穴中的囚徒一样，他们注定认为由他们的观念组成的世界是真实的。

youdao

In his parable, prisoners are chained in a cave and only perceive the world as shadows on the wall.

FORBES: Ancient Advice for Today's Sustainability Leaders

But normally, save for the odd urban explorer or raver illegally slipping onto the tracks for a nose around or a dance, this eerie world of shadows and ghosts has been all but forgotten.

BBC: Reawakening the Underground

Furthermore, we need to join hands in cleansing this region of the remaining shadows of the Second World War and the Cold War.

CNN: Opinion: Toward a new security order in Northeast Asia