英文關鍵字
arm
bucket
claw
construction
crane
dump
dumping
ecological
equipment
excavation
excavator
garbage
grab
ground
heap
heavy
hydraulic
industrial
industry
junk
land
landfill
lifting
litter
load
loader
machine
machinery
material
pollution
processing
recycle
recycling
robotic
rubbish
scrap
site
soil
stack
trash
truck
vehicle
waste
wasteland
work