These showers can be so extensive; that they can easily be observed from the ground.

这些簇射的范围非常广，在地面上都能较容易地观察到。

youdao

These showers can be so extensive; that they can easily be observed from the ground.

这些簇射的范围非常广，在地面上都能较容易地观察到。

youdao