英文關鍵字
air
atmosphere
auto
automobile
blowing
board
burger
car
carbon
close
co2
combustion
congestion
consumption
cutlet
damage
danger
delicious
detail
dioxide
dirty
eco
ecology
emissions
engine
environment
exhaust
fuel
fumes
gas
gasoline
gray
harmful
hot
industry
injection
juicy
lettuce
meat
mechanics
muffler
oil
oxide
pipe
poison
pollution
power
raw
road
smog
smoke
speed
steam
technology
toxic
traffic
transport
uptoxic
vegetables
vehicle
waste
wheel
wooden