英文關鍵字
active
activity
angle
asian
build
building
buildings
bulldozer
business
caterpillar
city
clean
clear
clearing
concepts
construction
countries
debris
definition
developing
development
digger
digging
dirt
disappearance
dredge
dredger
dynamically
earth
employment
enables
equipment
excavation
excavator
families
feed
for
grab
growth
hdv
heap
heavy
hidef
high
hydraulic
industrial
industry
land
large
machine
machinery
metal
mover
navvy
object
people
picking
platform
power
preparation
prerequisite
provides
quarry
realtor
rubble
sand
scoop
shovel
site
static
their
track
unemployment
view
widespread
work
worker
working