相似主題
英文關鍵字
activity
yellow
view
mine
mineral
stone
day
equipment
people
transport
vehicle
transportation
sunny
mountain
industrial
power
technology
machine
open
gray
big
heavy
landscape
construction
industry
several
work
earth
rock
truck
top
iron
caterpillar
granite
tractor
machinery
limestone
marble
excavation
excavator
hydraulic
loader
pit
gravel
aggregate
ore
backhoe
quarry
quarrying