scratch your head

scratch your head informalto think carefully about a difficult question or problem动脑筋，〔对难题〕冥思苦想:•This crisis has politicians scratching their heads and wondering what to do.这场危机让政客们挠头不已，不知怎么办才好。

• supercritical
• Monday clubber
• rescue archaeology
• drive-through
• erysipelass
• burn sth↔down
• hasenpfeffer
• great walls
• adjutage
• gambesons
• grey-faced
• hunt sb↔down
• eelspears
• truck trailers
• Fi.fa
• sinus arrest
• advanced gallery
• ordinally
• kaolinizing
• mesoscaph
• masseuses
• Gaiseric
• tutti-fruttis
• pseudoparenchyma
• all for
• day-and-night
• tea family
• provable
• dynamize
• anterointernal
• rapid response
• wind up
• hydrothermal alteration
• U.S.M.A.
• tauromorphic
• opera / court / movie etc house
• microemulsion
• high brasses
• mobilising
• Schneider's index
• eulogized
• acquiescings
• mixed glands
• shaper
• glims
• OOD.
• hold one's end hold up one's end
• reference tone
• laser photocoagulator
• dry circuit
• Synallactidae
• round the bend
• computer fluency
• algoid
• disc jockeys
• flick a glance / look at sb / sth
• beat someone to it
• menos
• plentifulnesses
• Caslon
• foreswears
• fiddler's money
• clines
• wing its / their way
• thickeners
• dissociative
• george
• business operating with foreign capital
• all that time
• stage-dives
• stranger
• taste
• winned 或 won
• as crazy as a bed-bug
• horoscope
• circumflexion
• black market
• vocat
• sea-ears
• tetrahydrocannabinols
• theine
• wound someone to the quick
• boursins
• second bases
• puddock
• tungst-
• spray dryer
• snickets
• prime coating
• maximizing land power
• acceleration
• pion
• Aargau
• Tudoresque
• cyber-cafe
• addressabilities
• rock failure
• hydrogenise
• elbow out
• monodramatic