音标:[ˈpɔ:tˌhəʊlz] ;
n. 舷窗( porthole的复数形式 )
n. a window in a ship or airplane
n. an opening (in a wall or ship or armored vehicle) for firing through

学英语单词
AADIS
adhesive gold
adventure playgrounds
Air Fuel
allelic diversity
amazonomachies
Ambustoma
anchor penetration
antifouling toxicants
arthropod bites
Asterocalamites
auger-electron
battle stations
be cloyed with
Bit-Adini
buzza
caddell
callies
central forecasting office
clubmans
conical spinner
conical-spike inlet
cut-and-paste
dakoits
dbl., able
deck-edged
Discoasterid
Duchenne-Arandisease
Dupo
Elaeagnus pungens
electronic service quality
Elymus arenarius
exchange salutes
ficus abelii miq.
Flag Message
folds
glass tube mercury-arc rectifier
grid roll
group productivity
hand it out
hauynite(hauyne-basalt)
high-level dosimetry
hit indicator
Hupalivka
icitap
Illegal scrolling
illuminator of reflected light
impregnante
in situ weathered material
in-home selling
indulged
injectings
iron-grays
Keogh plans
leucaenine
living words
lumpy jaw
maintenance-free operation
megaprimers
N-methyl-p-nitroaniline
nawe
negative entropy
negin
nervi bigeminus
never-seen
off flavo(u)r
over-rational
oxidoholothurinogenin
pennache -ed
policy of life insurance
pontoon
propellant injector
radiation density
ravenage
renewalist
reoccurings
repair according to condition
replica of data
retain a portion of foreign exchange
rinky-dinks
selfabandonment
sex-specific death rate
sexual reaction
Smith's dislocation
spurious lipoma
staggered rolling mill
submarine saline deposit
table Bristol
telegraph traffic
terpine resin
the hall of supreme harmony
the livery of woe
thraustochytrium motivum
trainpipe
transaction files
tunnel cryotron
two-colour printing
up on things
vauntingness
ventilator turning gear
wind separator
zinssers