英文關鍵字
activity
alpha
animation
backhoe
blade
bucket
bulldozer
channel
construction
contractor
crawler
dig
digger
dredger
dump
dumper
duty
earth
earthmover
excavate
excavation
excavator
graphic
gravel
heavy
hydraulic
industrial
industry
load
loader
lorry
machine
machinery
massive
mine
motion
pit
power
quarry
renovation
road
sand
sandpit
scoop
shovel
soil
tip
transport
truck
unloading
vehicle