英文關鍵字
anchor
background
big
building
cable
cargo
cloud
construction
crane
development
dock
duty
elevator
engineering
equipment
factory
fix
heavy
hoist
hook
hooks
industrial
industry
iron
lift
lifting
load
machinery
metal
object
part
pulley
red
rope
site
sky
steel
strength
strong
substation
tool
voltage
weight
work
yellow