be thin on the ground

be thin on the ground if a particular type of person or thing is thin on the ground, there are very few available不是随处可见的，是少有的:•Taxis seem to be thin on the ground.出租车好像不多。

• kitchenless
• Semple vaccine
• sulu
• epiphenomenons
• Fibroblast Growth Factors
• tinglers
• spondylo-
• phlebosclerosis
• extensions
• electrostatic focus
• mergest
• Scarlatti, Alessandro
• Decembrist
• beaded lake
• community center
• coati
• hit the books
• lymphadenopathy-associated virus
• quantity surveyor
• toxicologists
• reimbursing
• Phyllophoridae
• coming from him / her / you etc
• pesterers
• vibrant
• Doppler shifts
• adjustable
• buy ... in
• misplaced modifier
• rightnesses
• domine dirige nos
• microcosm
• phaseal
• writer time
• nosed
• wi.
• clavariaceaes
• three-hump camel
• amarilloes
• act as a brake on/upon
• coryneform
• shovelled或shoveled
• orthopsychiatrist
• high-wrought
• give （或 lose） one's heart
• dumb cluck
• professional corporation
• safe sex
• backbites
• seakindly
• air-and-exercise
• put difficulties in the way
• Taylorism
• well-worn
• preferredness
• existential anxiety
• job printing
• meetness
• Excorallanidae
• even parity check
• taels
• embracest
• bazaari
• Syringopora
• gardenia
• flare out
• hiss someone off the stage
• tooth decay
• vomeronasal cartilage
• therein lies…
• dodging
• urethra
• sensualistic
• error routine
• slip on
• be in a wax
• Hippolytos
• point spread
• by the day
• Easter Parade
• flapless
• in full bloom
• ihds
• blastopore
• earthquake region
• media vehicle
• vadose zone
• Hieroglyphic Hittite
• Ed Sullivan Show
• be on one’s back
• everywhither
• idealisation
• pull in the slack
• algorithmic languages
• gutta
• ranchless
• choir organ
• valuing
• demonocracy
• swab out