be a rarity

be a rarity to not happen or exist very often极为罕见:•Visitors were a rarity in the village.村里极少来客人。

• brominate
• accountings
• pattern analysis
• WRAF
• Olduvai, Gorge
• waistings
• isochrone
• decipol
• subproblem
• bat-flying time
• convulsionary
• gambrel-roofed
• it is about time
• see life
• pumper
• wear your heart on your sleeve
• damage-control
• go up in flames
• satraps
• Vlaminck, Maurice de
• contrast ratio
• sweep sb ↔ up
• disseminator
• in the process
• radioisotope assay
• sweet gales
• roll your sleeves up
• pumelo
• deliver a goal
• lead someone a dog's life
• darger
• stripped structural surface
• signaler
• squandermania
• steedless
• railroad engineering
• legendaries
• for life
• in grain
• wheedles
• near her time
• aliment
• misnomer
• drumlin
• preened
• time was (when)
• chromatographic analysis
• (stark) raving mad/bonkers
• sycophantishly
• payout ratio
• come into the open
• cataclysmic variable
• bargain on term
• ponderableness
• ytterbiums
• feces
• pour forth
• kirovite
• stuffed shirtism
• helloing
• cabbing
• in apology for
• Meaconing.
• subtropical easterlies
• disablements
• drawtube
• pedlar
• oenophilia
• liveliest
• mispunctuating
• cut sb short
• informatical
• electronic navigation
• resurrection
• characin
• backdoor entry
• pyaemias
• microanatomy
• Walkman
• Sigrid
• encumberments
• on speaking terms
• downward
• squamosely
• Reynolds model
• aminostratigraphy
• -nosed
• superficiary
• plymouths
• neutron counter
• RB.
• propagatest
• throw the baby out（或away）with the bathwater
• play for high stakes
• Health
• lady of a certain age
• impressional
• random breath testing
• souser
• diversion dam