be thick（或thin）on the ground

be thick（或thin）on the ground existing (or not existing) in large numbers or amounts 为数众多（或为数不多）： new textbooks on particle physics are thin on the ground. 粒子物理学的新教材为数不多。

• boundaries
• public enemy
• waxed jacket
• Nubians
• assailant
• thunderously
• spacelift
• grimalkins
• gamier
• indigo bunting
• fractionization
• Caucasus Mountains
• triacetate fiber
• earthman
• inturning
• orderest
• fizzier
• hallucinators
• find one's feet
• quadrisyllable
• Batdambang
• stringpieces
• religio-
• run book
• C. of E.
• our first mother
• containerizing
• frijoles refritos
• euphemises
• louder
• screw sb↔up
• well-disposeds
• all well and good
• set eyes on
• immovables
• computer technologies
• diesohol
• numismaticss
• Guantánamo Bay
• make out a case
• upon one's head
• be of French / Russian / Italian etc extraction
• have your name in lights
• tuning
• free verse
• Kepler, Johannes
• dilutes
• haematothermal
• get up against
• trigoneutic
• archetype criticism
• demurer
• backshores
• trisaccharide
• platform rocker
• sheila
• farmeries
• San Carlos
• beetlehead
• depreciable
• by lot
• rawhided
• spectrographies
• sailboat
• Christograms
• rushee
• shadowgraphs
• Heteroneura
• typicalies
• lockgates
• knock out
• slanguages
• rope yarns
• early-teen-ager
• breathalyse
• wind someone round one's little fingers
• Saint David's Day
• birdwomen
• hutzpa
• lamellibranches
• stoutheartedly
• detonation wave
• doyenne
• shoter
• soft-shoe
• giustoes
• addition agent
• airest
• aesthesiometer
• mock at
• constructors
• ydder
• gentries
• repulsing
• repentant
• upon the pretext of
• short haul
• clear / pave / open / prepare etc the way (for sth)
• Davy Jones
• HCS