機器
activity
architecture
blue
builder
cable
cargo
carry
confident
construction
crane
employee
engineer
equipment
factory
gear
hanging
hard
heavy
helmet
hitch
hoist
hook
industrial
industry
job
keel
labor
lift
male
man
metallic
objects
overhead
people
protection
raise
reel
rope
safety
screw
sling
space
station
steel
suspended
transport
up
vertical
wheel
worker
working
yellow