英文關鍵字
equipment
machine
coal
mine
industry
fuel
fossil
heavy
technology
construction
vehicle
transport
car
auto
build
engineering
linear
icon
animation
white
set
dark
mode
motion
graphic
hd
video
line
art
contour
pictogram
logo
concept
outline
animated
illustration
loop
black
drawing
web
theme
design
nightmode
symbol