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
ac linearity
acoustigram of joint
airpocalypse
anise alcohol
AOR-E
as far as I'm aware
boitani
Britishman
caboshed
canonicity
caramelized flavo(u)r
cating
chemical proportioning pump
chimic
codicil
collaging
complete remission
consomant
cross reference program
desponsates
dicling
dorsal interosseous artery
drog
dynamic interactive debugging facilities
enormance
Epilobium sikkimense
expressate
faggoting
fast-trackers
fastenings
filmzines
flat-plate lamp
formaldehyde
fractional factorial experiment
gandir
genus smyrniums
georgia long-leaved pine
hire charge account
hnis
ibotenic acid
internal point
irregular porosity
Jesus, Mary, and Joseph
job grading
large-vessel
lateral flange
leather bowl
LeftMargin
lithium tourmaline
lufray
measurement of organization
memory-bank
mercow
mesometanephric
Methylphenobarbitial
migration shift
Miniopterus
monelle
morbilli conferti
multivoxel
no match
nonoutlying
one-point distribution
Pennisetum longissimum
petrifactte
phakospora zizyphi-vulgaris dietel
phew
power of drilling pump
preindication
priming colo(u)r
quakke
radicule
redlin
remote replication
resource ID
sasal-li (sasan-ni )
schlock
sero-amniotic
sismogram
sitting president
slip-covered
small cutter development
sophonisba
specimens of one's blood
supplementary provisions
Swertia graciliflora
taff r.
Thórdharhyrna
to bawl about
towing service
turgograph
umbrella probang
un normalized
unbearing
unraked
vertical corn binder
vital wheat gluten
walk all over me
Werner's syndrome
Willis' pouch
word-decoding
Y-plan