機器
architecture
big
blue
brown
build
building
bulkhead
cement
construct
construction
crud
dirt
drill
dust
enginieering
frames
fume
gauze
handcraft
haze
hoist
industrial
industry
iron
large
lines
loud
metal
new
noise
noisiness
pile
piling
pit
power
progress
site
steel
structure
urban
vapor
vapour
wall
work
workers
workplace