The *what* falls?

[qatarperegrine]

ثمّ يأتي الشّتاء، وتسقط الثّلوج فتابس الأرض حلّة بيضاء

This is not the most useful sentence we have learned in Arabic class.

It means something like, "Then comes winter, and snow falls, blanketing the earth in a white garment."* This is not something I have the opportunity to say very often, living in Qatar. (For the record, it's 73 degrees right now.)

* If you can translate it better, please do. The instructor was a little vague.