within four walls

within four walls关起门来(谈);私下里;机密地： Directors often talked about business secrets within four walls so that they might not be leaked out.董事们时常关起门来谈一些业务上的秘密事情，以免泄漏。

• gratulation
• inscrutably
• evacs
• reign of terror
• generator set
• cac-
• Chac
• Morse potential
• enactor
• not know whether(或if) one is coming or going
• of（a） like mind
• pass the time of day (with sb)
• tomatilloes
• idealisations
• impresario
• in the books
• microseisms
• royal palms
• typhoid bacillus
• anatosauri
• swot up on
• byzantine empires
• track road
• nonrecombinants
• trouble spot
• mirror-shades group
• working week
• road roller
• the top is asleep
• cardboard cities
• world-wise
• soil colloid
• aliener
• acyl-coenzyme A
• naprapaths
• amesace
• impedance coupling
• cytopyge
• particularism
• T-men
• in heart
• be the better for
• equilateral
• kidling
• judge's order
• lacuna
• erred
• decertified
• full house
• holopulping process
• pass over in silence
• I'm not being funny (but)
• astatic
• more - than someone has had hot dinners
• paneers
• Lombrosian school
• guardhouse lawyer
• dentifrices
• recidivist
• get a laugh
• nilgaus
• triallelic
• be addressed to
• toss sth / sb ↔ out
• monoamine oxidases
• photomicrography
• Peyer's patch
• Trojan
• give one's right arm to have something
• cloud echo
• leucoplasts
• Pax Russo-Americana
• penning gate
• pidgin
• freeway
• squamulate
• All Fools' Day
• territorial waters
• curter
• Saracen
• be/come under fire
• glazing
• displacement
• champignon
• write ... down
• put ... over on
• oligomers
• mean place
• launder screen
• first point of Libra
• transcriptor
• grief
• methylatropine bromide
• scatterometer
• diocesans
• seamless tubing
• enter into the spirit of
• Sabin vaccines
• machan
• measled