(as) scarce as hen’s teeth

(as) scarce as hen’s teeth〈美口语〉非常罕见;非常稀有：Such a strange thing is as scarce as hen’s teeth，I have never heard it before.这样奇怪的事情非常罕见，我从来没听说过。

• federal land banks
• vacuum plating
• object complement
• purse and person
• big idea
• scale error
• acceptest
• occupy one's mind
• regional ileitis
• quid pro quo
• exception-item encoding
• rhodophytas
• depuration
• in these days
• deception
• goddam
• flood out
• HDN
• iron soldering
• Richelieu, Duc de
• basque shirt
• flews
• blasting powders
• baby snatcher
• airlessness
• honey barge
• marine weather observation
• take some
• tell sb↔off (for sth/for doing sth)
• bathtub gins
• aquaculturist
• polymerizing
• sublessor
• sebaceous
• inflection
• orch
• polytene chromosome
• SO
• what
• grubber
• duriron
• marekanite
• miscolour
• entrance losses
• suivez
• stretcher-bearers
• searching control
• mythopoetizing
• silicifi
• stipendiary magistrates
• hold / hang on for / like grim death
• letts
• Pribnow box
• Finno-Ugric
• elberfelds
• slip angle
• trypsinogens
• tennesseeans
• psychomantic
• the ground sliding from under someone's feet
• tantrum
• DC-to-DC converter
• push up against
• secretarial
• hand-out
• mad on
• charpoys
• hurriedness
• Advanced Mars
• hotfoot it
• phonetic
• probations
• cabal
• seedmen
• thermographs
• benefactresses
• fore-end
• polymelia
• suppositiousness
• prowessed
• rascallions
• Roentgenotherapies
• turnhalle
• Sordaria fimicola
• make danger of
• chondroitic acid
• the stuff to give the to give'em
• carrier culture
• hag bag
• shaping
• allanto-
• atrial fibrillations
• bump into
• deoxidisation
• contestable
• kissette
• quadruplest
• alienist
• cheesemaker
• support hoses