Rapidly
It is an adverb of manner -- despite seeming to suggest time, it does not define either speed or frequency. The same applies to synonyms such as "rapidly."
IT is very doubtful that it would snow at 47 degrees. The atmospheric conditions would have to be just about perfect. If it did occur, it would either cool very rapidly or change over the rain quickly.
Gunpowder burns but it burns very quickly. It's very reactive with oxygen. When enough heat is applied, either externally or from itself, the reaction progresses very rapidly and the gunpowder "explodes."
That is referred to as oscillation, where an object or entity moves rapidly in a repetitive manner either back and forth or up and down. This motion is characterized by a regular pattern of variation.
Bones develop by either of the two ways, intramembranous and intracartilagenous.
In reality, the first slaves in the Americas were Native American. The problem was they either died very quickly or escaped. Then they came up with the bright idea of trading the Native American slaves for African slaves.
Most often individuals either develop DM either between the ages of five and 14 or they do not develop it until they are over age 45
"Aging" can either be an adjective (as in, "an aging person") or a gerund (as in, "The person was aging rapidly").
either you r growing rapidly for your age or getting mature for you age ....
She either likes you or she hates you. Talk to her, you'll quickly find out which is the case. She either likes you or she hates you. Talk to her, you'll quickly find out which is the case.
Rumor has it that Carl Weathers nearly killed a player on the NY Jets squad. This was the result of a routine play and hard hit that seriously injured the opposing player. Upon seeing that Carl decided to hang up his cleats. This is either true or another urban legend. Only Carl can chime in on this one to set the record straight.
It will either continue growing, or develop into a functional protein.