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
acid digestion analysis
acid rain
affinage
Agnesi, Maria Gaetana
algebraic multiple-error correcting code
archtreasurers
artificial sweetner
asphalt tank with heating device
auxillary
beam direction
Beer's collyrium
black lovages
bollocks
border clash
called into action
Chakhmāq Bolāgh-e Bālā
Chełmno
come into want
computer language
cupping glass
Cymbidium mannii
cytochrome c peroxidase
diffuse blur circle
direct irritation
divineresses
DL-Tryptophan
Doumba Bélo
drazoxolon
end-point linearity
enzymatic bydrolysis
ethyl propargyl ether
for convenience's sake
free-piston
geminology
generalized audit software package
genus boltonias
genus Oncorhynchus
given me some skin
graffitiless
Great Mendenhall Glacier
groundwater artery
half-stuff
hinokiflavone
hyetographic curve
hyperfair
in contempt of
institute a boycott of
invigourate
jacquard neck-cord
job objective
kinasing
koka (koga)
Lambangan
legerdemainist
Lespedeza cuneata
mean for
midwickets
monogenic disorder
morphosyntactic
Mosegor
mouille
nagak
nanosatellites
nozzle valve assembly
NSC-239336
number-average relative molecular mass
o'barr
orthoreovirus avian reoviruses
pantheist
pated
pescador
picofarad
planing mill products
platyphyllonol
POLYCENTROPIDAE
ratio of current liabilities to total liabilities
resubdued
secondary-level address
sediment in suspension
semihypergroup
shitpile
simulation-search technique
Slu-Cortef
solventless coil
sort work file
stapleys
stepwells
strategy for new product development
stretching growth
stunpoll
supernated grip
tarpaulin canvas
telewriterr
the same
type systems
Universal Joint Task List
verkhne kolymsk
wet cupping
white slavers
wind tunnel flow rate
youthened