英文關鍵字
3d
animation
background
black
construction
craftsman
danger
equipment
face
gear
glass
guard
hard
head
helmet
icon
illustration
industrial
industry
isolated
isometric
light
man
mask
metal
motion
object
occupation
people
person
plastic
professional
protect
protection
protective
round
safe
safety
shield
sign
simple
symbol
tool
torch
wear
weld
welder
welding
white
work
worker