英文關鍵字
action
activity
asphalt
builder
building
construct
construction
control
crane
equipment
gear
hand
heavy
hoist
hydraulic
industrial
industry
lift
lifting
machine
machinery
manual
men
mobile
old
pave
pavement
paving
power
pressure
repair
road
service
site
steel
street
tool
transport
transportation
trolley
truck
uniform
upheaval
vehicle
wait
warehouse
wheel
white
work
worker