英文關鍵字
boom
bucket
bulldozer
cab
channel
chassis
coast
crawler
current
dig
digger
dirt
dirty
dredge
dredger
driver
dump
earth
environment
excavate
excavating
excavator
fill
flow
ground
heavy
hydraulic
industrial
load
loader
machine
mechanic
mechanical
mud
muddy
nature
river
riverbank
riverbed
scoop
shovel
soil
water
wide