音标:[ɑ:] ;
n. 英语字母表的第十八个字母;字母R(或r)所表示的读音 /r/;字母R(或r)的书面形式
adj. R(或r)的;第十八的

学英语单词
'Almā
acetolactates
Amitostigma bifoliatum
appointers
Arkansasans
arsenic ion
bit class
Brownwood, L.
call-out
capotasto
certificate of capital stock
chemical analyses
chung ho y?eh wu
churchpeople
ciliature
cold-air dryer
commercial abstract of financial statement
conjunctive goal in deduction
controller-structure interaction
cow trainer
development column
district high school
Dragonja
eamesiella corrugata
electrolytic heat treatment
electron density resolving power
electronic cash register
escape keys
Euscaphis konishii
excessive demand inflation
fibrinogen tests
fissure water filling deposit
form-drag
Gar Percée
go down the line for
Gray's points
great icosihemidodecahedron
hand latch
hectical
high input resistance circuit
honger
hose connection
hydropolysulphides
in procession
inelastic restitution
iodyrite type
kauri pine
kinky yarn
lawnmowing
levermatic manual wool press
lie in franchise
local dishes
Loffler boiler
mainframe computing
man-powered aircraft
maris complaisants
metallic mesh
microwave space research facility
migration velocity
military preparation
milk-thrombus
neisseria menigitidis
nibble at the bait
nipas
nitrid
nuble
omise
overt observation
passados
pay ... bills
pendell
periporitis staphylogenes
Phyllanthus cochinchinensis
piston pull scale
preassessments
Raudive
re-enabled reusable routine
recomfortless
recursing
restrictor
rolling bearing oil seal
save system rights
semicustomized
single pane
single-ended signal
Sinojackia sarcocarpa
SolarWorld
solidago sempervirenss
span of control
standard deviation of weighted arithmetic mean
steriflamme process
sucessful
surf-riding
swept out
Trachycarpidium
unsecured liabilities
VNTR
wdfw
wed-in
widowhood
wilkies
wind site assessment