英文關鍵字
architecture
black
building
cargo
chain
city
clipping
concept
construction
crane
detail
engineering
equipment
factory
green
heavy
hoist
hook
industrial
industry
iron
large
lift
lifting
line
lock
machine
machinery
manufacturing
metal
nature
old
park
plant
road
rope
rust
rusty
safety
steel
store
street
strength
strong
tool
warehouse
weight
white
work