英文關鍵字
auto
automobile
automotive
backdrop
billowing
car
cloud
co2
concept
condensate
coolant
cooling
curve
cylinder
damaged
diesel
dioxide
drive
emits
engine
exhaust
fog
fuel
gas
gasket
gasoline
grey
harmful
head
liquid
machine
matter
motor
particulate
pipe
pollution
power
repair
required
road
shape
smoke
smoky
smooth
some
soot
tailpipe
tosol
toxic
transparent
transport
transportation
tube
vehicle
waste
water
white