- - Blue moons
- - Many, many moons
- - Many, many centuries
- - Many years ...
- - Many moons ...
- - Interminable spans
- - Almost an eternity (rhymes with "crayons")
- - Becoming confused as one ages
- - What evolution might be measured in
- - Very, very long periods
- - Milord's millennia
- - Very long periods of time
- - Near-eternities
- - Almost forever
- - Long times, in London
- - Immense time periods
- - Big stretches
- - Change as one ages
- - Two or more eras in geologic time
- - Extended period, hyperbolically
- - A while, in hyperbole
- - Bajillions of years
- - Incredibly long stretches
- - Seeming eternities
- - Stretches between ice ages
- - Millions of millennia
- - Time immemorial
- - Eternities
- - Incredibly long stretches (Var.)
- - Ages and ages (Var.)
- - The time it takes mountains to rise
- - Time spent in line, seemingly
- - Light-years
- - Just about forever
- - Geologic spans
- - Millennia on end
- - Forever, or close to it
- - Untold centuries
- - Billion-year spans
- - Eternities: var.
- - How long it takes mountains to form
- - Millennia upon millennia
- - Umpteen years
- - They comprise eternities
- - Timeless times
- - Epochs unlimited
- - Untold ages
- - Epochs upon epochs
- - Millennia
- - Kalpas
- - Geologic times.
- - Untold years.
- - Thousands and thousands of years.
- - Time it takes mountains to form
- - Earth science chapters?
- - Big times
- - Milliards of years
- - Eternity
- - Almost eternity
- - Time on end
- - Long periods of time
- - Long periods
- - Long time periods
- - Billions of years
- - Very long times
- - Long spans
- - Practically forever
- - Thousands of years
- - Almost an eternity
- - Centuries upon centuries
- - Very long periods
- - Ages and ages
- - Near-eternity
- - Long times
- - Long stretches
- - Geologic time periods
- - Time without end
- - Forever and ever
- - Forever, seemingly
- - Seemingly forever
- - Very long time
- - Forever, it seems
- - Years and years
- - Time periods.
- - Long time
- - Ages ......
- - "A long, long time ......"
- - Immeasurable periods
- - A really long time, in Britain
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