They have vast sources of high tech to draw on, while ours are already running out.

"This poet was a vast source of inspiration for building up womenfolk as self-reliant."

A group of Japanese researchers have identified a vast new source: the seafloor.

We sit upon a vast and wondrous source of power, Yasha.

The wind resources over Europe's seas represent a vast, local source of clean, renewable energy.

It is also a vast source of even younger and more cheaply acquired girls for sexual servitude in the United States.

But yes we do have a vast source of quality seamers/quicks and can cope with injury problems.

Notably this college has been a vast source for intellectual capital in Engineering Sector, both Public & Private.

Or maybe it's cynical politics: privatization provides both an opportunity to evade accountability and a vast source of patronage.

The Internet is a vast and seemingly endless source of information.