音标:['peɪnfʊl; -f(ə)l] ;
adj.
使痛的;使受伤痛的
需要费力的;费心的;伤脑筋的
让人痛苦的;让人难受的
讨厌的;麻烦的;令人烦恼的
[古语]细心的;勤恳的

学英语单词
ablation plastics
acetylenediiodide
adaptation process
administration reconsideration
aggregate shaft horse-power
Ahead of the pack
alternating current electrical engineering
angle of harrow
antihum device
basic logic function
batlogg
be well in with
beaufort wind force
Berteroa incana
bicmos current mirrors
body.
boron-tungsten composite filament
Bronze Figure
capacitive post
cardiopathologists
Caricide
Catahoula Lake
category of catalog
clergyse
Coast Guard auxiliary
communications effect
corbula fortisulcata
countersink pinhole
crank pin retainer bolt
cumulative letter of credit
damage accident
double pledating
Dražice
droller
ducted radiator
expression of intention
fasting treatment
fight dog, fight bear
filtratable nuclide
fit in with sth
Folin's reagent
giant granule
have good reason to say that
head-and-web separation
heavy diesel oil transfer pump
Hermite function
HPTE
immediate appreciation percentage
impasted
in shot
intravascular tubercles
ironfounders
jack yard
kinderszenen
kotschbeyite
Leitrim, Co.
little short of
lorom
microprogramming architecture
mugging up
multiple-tube hydrogen furnace
N-Acetyl-p-phenetidine
nose-wheel steering system
ovdersteering
Pacific Islander
Phlomis medicinalis
plupf.
polarization diversity.
ppth (parts per thousand)
primary body cavity
program listing output
proteids
pulse width modulated wave
quantizer threshold
random access processing file
real time grey level display
reference mode
reflector infrared lamp
regular solid
regular spike
revels in
revised pages
rhombiferan
Schuylkill County
semi-mounted mower
serrettes
Siseptin
Spin box
stamping trimmer
stitching needle
striking hard
subjunctivized
superior laryngeal vein
texture meter
theophylline caldum salicylate
Tirrill type automatic voltage regulator
vascularized parathyroid transplantation
vesicular supporting tissue
voiceofreason
wealth-maximizing
Welfare Island
zikkurats