機器
auto
automobile
automotive
black
bottle
car
change
changing
check
clean
close
closeup
container
diesel
ecology
engine
equipment
fresh
funnel
gasoline
gearbox
grease
hand
industry
maintenance
man
mechanic
mineral
motor
oil
operation
petroleum
plastic
pollution
pour
pouring
problem
repair
safety
service
station
synthetic
system
technology
transport
truck
up
vehicle
working