nail something down

nail something down 1. fasten something securely with nails 钉牢, 钉住。 2. identify something precisely 弄清, 确定： something seems unexpected - I can't nail it down, but it makes me uneasy. 好像出了点事——我弄不清楚是什么, 可它让我感到不安。 3. secure something, especially an agreement 敲定; 确保（某事物, 尤指协议）。

• man of wheel
• beachscape
• drop ins
• soda jerks
• superaerodynamics
• vicarial
• propranolol
• quietener
• thunderous
• pipestem
• to no effect
• skinny-dippers
• persuasiveness
• political liberties
• sigh
• smolts
• all-temperature
• Mexican breakfast
• ferroselenium
• calumniously
• a crack on the head
• striatures
• light homing
• bullishnesses
• like geese on a common
• wanking
• Triglidae
• cramp irons
• big H
• donators
• riflemanship
• alkoxys
• outlaw country
• pitot-static tubes
• premortal
• Menai Strait
• carniest
• regionalises
• mobile robot
• repartimiento
• huntsman's-cup
• heat flow
• firing lanyard
• testier
• no amount of
• flat-panel display
• ring a bell
• Latin Americanist
• boylesk
• Syriacisms
• shiers
• disk winding
• companders
• in seven-league d boots
• Mastigamoebidae
• preterminal
• oblique fracture
• Tagore, Sir Rabindranath
• thermal spring
• heterohemolysin
• partisanship
• goggle-eyeds
• the tricks of the trade
• pneum-
• no-strings
• schlepped
• silvical
• nip at
• pardalotes
• Calif.
• masturbations
• start after someone
• no fear!
• aorta
• treponemataceaes
• breath of life
• barilla
• palliatory
• cardiology
• blood-and-thunder
• Nisei
• oriental
• syngnathidaes
• one for the road
• shrimpfishes
• the best of the bunch
• off sides
• Olmec
• coeval
• cumulative stock
• thermal
• inequipotential
• parent elements
• rip sb/sth apart/to shreds/to bits, etc.
• breathe down sb's neck
• jazz band
• suffer in one’s pocket
• alferez
• spectrophones
• carroty