他知道印度西海岸是年代和规模未知的古代碰撞的发生地。

He knew that the west coast of India had been the site of an ancient impact of unknown age and size.

youdao

他知道印度西海岸是年代和规模未知的古代碰撞的发生地。

He knew that the west coast of India had been the site of an ancient impact of unknown age and size.

youdao