英文關鍵字
animation
backdrop
background
banner
business
cartoon
circle
circles
cog
cogwheel
concept
dark
design
digital
dynamic
element
engine
engineering
equipment
footage
gear
gears
graphic
icon
industrial
industry
isolated
looping
machine
mechanical
mechanism
progress
round
seamless
shape
sign
simple
speed
symbol
technical
technological
technology
vector
video
web
wheel
work