英文關鍵字
bunker
cargo
ceramic
clay
construction
crane
dirt
equipment
factory
freight
gravel
heavy
indoors
industrial
industry
interior
ladle
large
load
long
machine
machinery
manufacture
manufacturing
material
mineral
motion
moving
plant
pour
production
railway
row
rubber
sand
shipping
stone
storage
strew
strip
supply
transport
transportation
unload
wagon
warehouse
work