绵延

The deposits spread for 100 kilometers across four counties.

这些矿藏一百公里, 跨越四个县。

Bright ejecta rays such as these are produced as impacts excavate and eject relatively unweathered subsurface material.

这些放射状石坑产生于天体撞击溅出的地下物，在遍布石坑的面数百公里。