英文關鍵字
break
breakthrough
build
clay
communication
construction
control
cool
crash
culvert
damaged
ditch
drainage
dry
earthwork
ecology
energy
environmental
equipment
facility
fitting
fountain
ground
hole
home
industrial
infrastructure
leak
line
maintenance
mud
network
open
orange
outdoor
pipe
pipeline
pollution
protective
repair
replace
smog
smoke
storm
traffic
trouble
tube
water
work
wreck