英文關鍵字
black
car
carbon
cargo
carriage
cars
climate
coal
container
delivery
diesel
dirty
energy
environment
environmental
export
fossil
freight
fuel
full
global
import
industrial
industry
load
locomotive
logistics
mine
mineral
moving
oil
plant
pollution
power
rail
railroad
railway
resources
shipment
shipping
supply
traffic
train
transferring
transport
transportation
wagon
warming