英文關鍵字
accident
bucket
catastrophe
cleaning
closeup
construction
contamination
dig
digger
digging
dirt
disaster
earth
earthwork
eco
ecology
environment
equipment
excavating
excavation
excavator
extraction
ground
heavy
hydraulic
industrial
job
loading
machine
machinery
material
mechanical
mother
mud
nature
oil
pollution
profession
sand
scoop
shovel
soil
technology
toxic
transport
vehicle
work
working
yellow