英文關鍵字
acceleration
business
carrying
cold
commercial
concept
conifers
crane
deforestation
dirt
dirty
drive
driving
environmental
factory
forest
forestry
heavy
industrial
industry
large
loads
machine
mining
motion
narrow
nature
north
open
ore
pine
pit
pollution
production
quarry
rides
road
snow
taiga
transport
transportation
transports
tree
truck
vehicle
way
winter
wood
work