英文關鍵字
accident
asphalt
bar
cable
cabling
chain
city
communal
communication
communications
construction
cut
cutter
cutting
day
destruction
device
dismantle
drainage
drilling
electric
electricity
engineering
environment
equipment
excavator
gravel
ground
heavy
hydraulics
industrial
industry
laying
machine
machinery
maintenance
men
metal
movement
pipes
pit
plumbing
power
powered
process
reconstruction
remove
repair
road
routes
service
soil
street
supply
telecom
tool
trade
transfer
trench
unit
urban
winter
work
works