这个国家拥有广袤的森林资源。

The country has ___vast forest resources.

沙漠中散布着大量的沙丘。

The desert contains a ___vast number of sand dunes.

这片沙漠覆盖了广阔的区域，一眼望不到尽头。

The desert covers a ___vast area, stretching as far as the eye can see.