音标:[ˈəunli hwen] ;
只有当; 除非

学英语单词
acess door
aircraft rocket launcher
All your eggs in one basket
amber seeds
as sharp as a tack
asbestos insulating tube
ballistics
bath-gels
beer pitch
beforehand
bindlestiff
blue jacket
C compiler
cargocaire
ceasma
Christolea himalayensis
come to a head
compiler base
deep layer bed
deformation vibration
desea
desmostylian
didymopetalus
do a line with
double bridge (kelvin)
drive - in cinema
electronically scanned tacan antenna
Erp72
finger maze
flexible-chain fibre
French Revolutionary calendar
galvanistical
gastronyssids
glout
gravitational sliding
heat-balance
heterophytes
high elastic coupling
hostias
hough function
international department
jacobius
key out
kocharian
kollerdormfix
labiodental consonants
leopard retina
liquid assetss
luminance temperature
matagena
mesocolic snelf
molecular leak
moral injury
neurilemmata
nontronites
orchdiopathy
organoheterotroph
OTECs
other-directed society
pachyserica horishana
page region
petuntse,petuntze,petunse
phillipsiids
pholithography
phosphatidates
phyma
Poa shansiensis
pops up
preclosing
Presinian period
production report
quartz fibre
querying database
queue linkage entry
rare-book stacks
reactor pressure vessel
reactor sacrificial shield wall
remote-control reading
roller baler
self-identifiers
settle a score
Sitakoto
skira
slurredly
space experiment
specimen page
syntax-oriented compiler
tanatarite
telegraph automatic routing equipment
Thach Thành
the west wing
total body surface area
tribodine
Tripterospermum nienkui
unit-cost contract
unniloctium
vasomotion
vis-vis
vojtas
waterbrain
wheel reductor
zepas