once（或every once）in a while

once（或every once）in a while from time to time; occasionally 偶然; 间或。

• calmnesses
• categorizes
• noise killer
• terrestrial sediments
• industries
• woodruffite
• Doppler radar
• jobbernowls
• a while
• ready and waiting
• recomputations
• locusta
• opisthe
• necessary evil
• Purchas, Samuel
• rush family
• chorioepitheliomas
• cannon-proof
• acetylcysteines
• prompt fission neutrons
• structuralistic
• matter of course
• for each / every
• bird of peace
• heriots
• nutators
• Portland cement
• fulfill
• drip irrigation
• Hebrew calendar
• allocates
• make-and-breaks
• chirpiness
• wargasm
• sleepwalk
• have one's eye in
• paean
• downwellings
• utopianism
• play (或 act)the fool
• grudgings
• strunt
• historio-
• jeanager
• charge parity
• telophase
• Adenese
• dismantled
• ordered list
• ankleted
• closed circulatory system
• LIFS
• halfway line
• troubled
• first sergeant
• the future life
• diurons
• paint outs
• turn in on oneself
• Teller-Redlich rule
• parched
• saloon keepers
• remotest
• kinetic energy
• keep a foot in both camps
• shelter decker
• sketch in sth
• furriners
• Alydidae
• despot
• meat pie
• conj
• telebettor
• pwas
• sand hole
• Methuselahs
• exclaustration
• blackland
• cross the Rubicon
• horse races
• bandswitch
• antislavery
• RORSAT
• lehayim
• make passes
• uncorrected
• Grenville, George
• tribespeoples
• dead zones
• fractured formation
• firestones
• coefficient of compressibility
• round-backeds
• lecanoras
• studentlike
• nonrated
• walk away with
• open-web
• heritize
• fusion crust