英文關鍵字
air
are
atom
auto
blue
bubbles
cleaning
degrease
degreasing
dirt
dirty
drying
engine
equipment
fatty
fever
flicker
futurism
glass
glasses
gloves
headphones
helmet
industrial
industry
jet
lame
machine
machinen
manual
material
mechanic
mechanical
mechanics
metal
molecule
moving
oscillations
parts
pressure
process
protective
ready
rinse
science
suit
this
tiny
ultrasound
used
vessel
wash
washed
washing
water
waves
when
wiggle
windglass
windscreen
windscreenn