Why do the roiling, black clouds of a thunderstorm produce lightning?
As he eased the 20-ton bus into the roiling water, the torrent instantly surged up against its sides.
The study results prove the advantages of groove guided roiling shear in improving the quality of shearing and reducing the peak shearing force.
But for two or three weeks now the Mekong has been back to its usual roiling brown, and the cargo boats throw up a huge bow wave as they inch upstream.
The growing fear that those bonds will plummet in value, or even default, is roiling financial markets.
Stars a hundred times more massive than the sun Pierce the roiling haze of the Tarantula Nebula in the Large Magellanic Cloud.
Rather, it is a roiling, seething cauldron of evanescent particles.
Outside the narrow window, the sun set beyond a dense young forest, and its slanting beams picked out the roiling motes as they settled back towards the floor.
There's no sign of ice, just a river roiling with silt-laden melt.
This is an utterly fantastic claim to make at a time when expected European inflation is, if anything, too low, and what's roiling the markets is fear of more or less immediate financial collapse.
According to quantum mechanics, empty space is anything but empty. Rather, it is a roiling, seething cauldron of evanescent particles.
Often she continued to lurk, roiling the mud to conceal herself and basking in her own scaled beauty, as carp will.
