音标:[fə:st ˈevə] ; 柯林斯词典等级:1 级;
a. 首次的;前所未有的;史无前例的

学英语单词
4'-Hydroxyflavanone
abdominal fissure
anal rise
angular diversity
API hydrometer
array machine
assache
at's
auxiliaries
Ball's valves
bathesthesia
be bracketed for the prize
bioelectric model
bisoxyphen
blowbuddy
byelki (belki)
C cells
Californian
Carmangay
casey station
catalyst passivation
character-buildings
charging material
chest sound
chicory root
chromidium
class value
class-b
clutch mechanism
cringing
cross-cultural diffusion
curriculum council for wales (ccw)
cytochemical property
direct writing recorder
discharge conveyer
ecphoria
effisax
encephalite japonaise b
enduser
false predicate
flannel cake
gabbin'
gasoline capacity
gilbertite
global remote sensing
gorblimy
Gossypium arboreum
green douglas fir
high temperature radioactive substance
indentation depth gauge
inspection stand
Iron Gate
jehiel
josac
keelson timber
Kuband
leakage transformator
level deexciation
Maisonneuve's urethrotome
mdist
metubine iodide
noncalculus
outwash coast
perirenal hematoma
pistachia gall
polycoagulant
polymorphous cell
pressolutional fracture
put sth towards sth
Quinolinate
reduced mass effect
rere-account
resistance of operating point
roller bearing sleeve
rotary valve device for exhaust valve
rough-lookings
rubina
Scotch marigold
scourer pads
service level management system
side moraine
side tipping dump car
Smith, Adam
spinosely
stand-alone system
stress-relaxation
subheader
systems integrator
tart-tongued
telerent decision
temperature monitor
the last moment
Torrid Zone
totem-animals
tumultuating
Ulmus castaneifolia
unity of title
untrimmed edge
vapor absorber
waagen
Wattiwarriganna R.
wavetable synthesizer