英文關鍵字
beam
builder
cargo
construction
contractor
craftsman
crane
enterprise
equipment
factory
famale
firebrick
gear
hard
hardhat
hat
hoisting
indoor
industrial
industry
iron
laborer
lifting
loading
machine
machinery
man
manufacture
manufacturing
metal
metalwork
moving
person
plant
processing
production
protective
rope
storage
team
teamwork
technology
tool
transportation
uniform
unloading
work
worker
workshop