英文關鍵字
backhoe
blade
building
bulldozer
construction
crane
crawler
dig
digger
dumping
duty
earthmover
earthwork
engineering
excavate
excavations
excavator
gear
heavy
huangpu
industry
jib
land
loader
loading
lorry
machine
mining
navvy
operator
pier
pile
pit
pour
river
roadworks
rubble
scoop
shanghai
ship
shipping
shovel
sludge
soil
track
tractor
truck
trucks
type
unloading
vehicle
worker