英文關鍵字
slow
slowmotion
disk
sparks
metal
iron
machine
equipment
electric
industry
tool
workshop
worker
steel
industrial
spin
person
disc
mechanic
speed
turning
circle
fire
maintenance
occupation
employment
cutting
service
engineer
metalwork
repair
garish
scattering
cutter
sprinkle
drill
weld
shiny
gritty
heat
blade
detail
rotate
male
processing
burning
glowing
emitting
particles
motion
man
welder
safety
clothes
polishes
angle
grinder
sideways
flashes
hands
gloves
cut
piece
fly
different
directions