英文關鍵字
bearing
block
bolt
circle
clock
clockwork
close
closeup
cog
cogs
cogwheel
cogwheels
cylinder
dolly
engineering
equipment
footage
gear
gearing
gears
golden
head
industrial
industry
isolated
machine
machinery
macro
magical
mechanical
mechanism
metal
nut
nuts
old
part
rectified
repair
retro
shot
steel
teamwork
technology
tools
top
turning
video
vintage
watch
wheel
white
working