英文關鍵字
activities
architect
architecture
bridge
buil
building
cables
chain
company
concrete
construction
counterweight
crane
crisis
development
dynamic
empty
engine
engineer
enginiering
equipment
force
grey
growth
hatch
high
hook
industrial
industry
large
machine
machinery
material
materialn
motion
move
movement
movementn
movementnn
moving
nobody
office
outdoor
part
professional
proyect
pulley
raise
rotate
rotating
rotation
safety
site
sky
soundnn
steel
stone
technology
tensioners
tools
tower
unloading
urban
while
yellow