英文關鍵字
barrel
beautifulsky
biodiesel
blue
business
canola
container
cylindrical
ecology
economy
effect
energy
engine
equipment
extracted
fats
golden
history
huge
industrial
industry
iron
large
largetanks
light
lightsofasun
locomotive
logistic
logistics
machine
mechanism
oil
old
petrochemical
plantoil
product
rail
railroad
railway
shipment
steel
storagetanks
supply
technology
track
train
transport
transportation
urban
wagon