as hard / tough as nails

as hard / tough as nails very TOUGH and not easily frightened, or not caring about the effects of your actions on other people非常坚强的; 铁石心肠的，冷酷无情的

• wrongnesses
• A.O.F.
• rusty spot
• regnal years
• enter into
• submaxilla
• unmitring
• sodium silicoaluminate
• imposer
• compellings
• hadrians
• shower stall
• dice coal
• sigma particle
• factor analysis
• turnabouts
• square knot
• Indo-Aryans
• within one’s province
• supernovae
• royalty
• Jaeger method
• calorising
• merms
• Welsh rarebit
• Galway Bay
• piler
• tailspinning
• requicken
• geryons
• Canareses
• decorate with
• deglamo(u)rising
• trihedrons
• Complementation Tests
• strewth
• mesomorphic phases
• living space
• in personam
• be a dream come true
• aerial mammals
• gracelessnesses
• mammock
• elver
• photoheliographic
• discordances
• go nuclear
• Seven Sisters
• fetoscopes
• Grums
• schoolmasterish
• sine-wave response
• decurrent
• lubricated gasoline
• thought-pattern
• designer apartment
• instruction modification
• end-around shift
• blood boosting
• one's blood freezes(或runs) cold
• aerocars
• drunk as a a piper
• honorable
• phototape
• muckluck
• Krus
• Happy Prince
• instaurators
• put to it
• paroxytone
• proper fraction
• Bergsonism
• investment estimation
• bovidaes
• regosol
• pos
• A hedge between keeps friendship green.
• autoclavings
• fore-topmast
• direct
• move over
• panti-
• skiograph
• Pacific equatorial countercurrent
• geezs
• Procne
• deck beam
• upper-level winds
• thermoluminescence
• for a wonder
• tris-
• translaters
• adventive cone
• Corynophlaeaceae
• bottle song
• halfway through (sth)
• major in
• Grub Street
• landlordry
• paleoenvironmental