英文關鍵字
big
build
bulldozer
car
clay
construct
construction
crush
development
diesel
dust
earthmover
engine
equipment
excavator
grader
ground
heavy
hydraulic
industrial
industry
iron
labor
land
lane
large
machine
machinery
mining
motor
motorgrader
new
power
road
roll
sand
scraper
site
soil
steamroller
structure
surface
tractor
transport
transportation
truck
vehicle
way
wheel
work
working
yellow