英文關鍵字
agricultural
agriculture
big
bucket
building
bulldozer
close
communications
construction
cottage
country
countryside
dig
digger
digging
digs
dirt
earth
earthworks
equipment
estate
excavat
excavation
excavator
farm
foundation
ground
heavy
house
industrial
industry
machine
machinery
mining
pipes
pit
preparation
project
real
road
shovel
shovels
site
spring
suburban
supports
tractor
trench
truck
vehicle
winter
work
yellow