英文關鍵字
action
activity
big
building
bulldozer
city
closeup
constructing
constructional
demolition
dig
digger
dipper
dissociate
dredge
equipment
excavator
hydraulic
industrial
iron
jaw
job
ladle
leaf
loader
loading
machinery
mining
mover
multifunctional
natural
new
outdoor
placed
pump
road
scenic
scoop
season
shovel
technics
technique
tractor
unloading
urban
work
working
yellow