notwithstanding
加入词篮however
whereas
although
though
vapour
evaporate
steam
solid
solidarity
liquid
fluid
impetus
gravity
velocity
accelerate
slow
rate
elastic
flexible
spring
stretch
zigzag
compress
shrink
magnet
magnetic
integrate
intact
light
ray
X-ray
ultraviolet
infrared
reflection
reflect
laser
spectrum
focus
vibrate
interference
interfere
echo
wave
frequency
period
supersonic
radar
potential
repel
voltage
resistance
fuse
volt
watt
conductor
conduct
semiconductor
pressure
stress
friction
strain
mass
inertia
keep
stay
retain
ecology
variety
species
rare
energy
power
contaminate
purify
pure
sheer
environment
preserve
conservation
protect
extinct
pollute
pollution
resource
renew
recycle
reproduce
aggravate
deteriorate
acute
degenerate
sustain
erosion
greenhouse
ozone
lead
mercury
stack
