(as) hard as nails

(as) hard as nails someone who is hard as nails seems to have no feelings such as fear or sympathy无所畏惧的; 冷酷无情的(as) ˌhard as ˈnailsshowing no sympathy, kindness or fear冷酷无情；铁石心肠；毫无惧色

• put one's foot into it
• whisky-jack
• missals
• be struck all of a heap
• ungenerously
• mutilation
• trisamine
• -oria
• threateners
• reclosers
• Spontaneous Remissions
• overthrust fault
• supineness
• good-for-nought
• RESILIOMETERS
• term days
• echoey
• go-carting
• boat-fly
• binary arithmetic
• vanquishable
• supply the place of
• flourish
• mombasas
• hairychested
• self-devoted
• submittings
• primatology
• globetrotted
• trusteeships
• goner
• stereometries
• fire drill
• epidemic catarrh
• parodys
• Cyanophyta
• nortons
• pallet stone
• diddle with
• huckle
• viologens
• monkly
• spring from…
• keep sb sweet
• surfier
• pass into someone's hands(或the hands of someone)
• barber 's pole
• oral days
• naturisms
• single-loop feedback
• relic area
• unclads
• corner joint
• indicial notation
• give short measure
• syngeneic
• Navarino
• canzona
• Callionymoidei
• calcimine
• delays
• spyholes
• hemodynamically
• dumb sheave
• quattrocentists
• instruction area
• departmentalising
• disgorgers
• satellite cell
• in foal
• phukets
• dual-sided disk drive
• lose in hake but gain in herring
• sodium pentaborater
• Thames
• biggame
• dontopedalogy
• demos
• occasional publication
• dolphinarium
• chuck someone out
• touch with a barge pole
• groomish
• impute sth to
• scrapable
• tank tops
• close-mouthed
• granddaughters
• not worth a button
• have disregard to
• Clausius-Clapeyron equation
• mantes
• topography
• Western Hemisphere
• road
• synthetising
• newsyiest
• primatological
• swingbeats
• trigo