英文關鍵字
air
atmosphere
auto
automobile
bad
behind
bumper
car
cold
condensation
damage
danger
detail
diesel
dirty
double
dual
ecology
emission
energy
environmental
exhaust
fuel
fume
gas
gasoline
ice
icicle
mechanic
modern
motor
muffler
part
pipe
pollution
power
racing
road
smog
smoke
steam
tail
technology
toxic
traffic
transportation
tuning
vehicle