vt. 不知道或不了解
v. t. To cease to know; to lose the knowledge of.
v. t. To fail of knowing; to be ignorant of.
a. Unknown.

学英语单词
a priori value
allotons
amphophile
argentum arsphenamina
Asplenium scolopendrium
austrophasiopsis formosensis
automatically synchronous
automotive market
average recovery
barbula unguiculata (huds.) hedw.
blast-heating apparatus
case bottle
Catullan
cellas
choristids
crotch rockets
CTU (central terminal unit)
curved exposure tube
dumb as an an
dunging area
endometrial
enter account
entrancer
ergot alkaloid
even odd nucleus
fezs
field programmable gate array
frontal-palatine suture
Gvardeyskoye
heat of neutralization
hemophleine
henseler
hewy
indexes of labour productivity
induction motor controller
infect tube
isoscope
jack-straw
kiss cutting machine
labovitz
Leacock, Stephan Butler
leaden-eyed
loop, output
macrocephalia
main agreement
map projection rectangular polyconic
mark 1
material advantage
metal valley
missionarism
NF (nanofarad)
Niederfrohna
no such receiver
oesopygus
on the right side of the blanket
ontogenal
onychophora
paired sample means
pan-alopecia
paranet
paroxysm(paroxism)
pedicules
pillaf
Pitcairners
playing ball
pole piece
Private Interregional Conflict of Laws
quasi-long range order
rearing cage
reluctancy
reminted
Rock Town
rush plant
shelly crack
silicon target camera tube
simplex and duplex switch
smart meters
spot distribution
spot-size converted laser diode
St Austell Bay
standard fading
Starbuck Glacier
statement header
steel dryer
suburb passenger ticket
Séoune
t/m (telemetering)
tailwalk
take up block
Tetrastigma cruciatum
thallous cyanide
the ministry of finance
thermogenic belt
Thevetia peruviana
Thomas Sheraton
tissue tension
transmitter tune light
trazodone
vanilla options
Vanstadensrus
wheel war