英文關鍵字
aerial
area
arid
asia
background
barrel
chemical
china
crude
desert
drill
drilling
dry
dusty
energy
environment
equipment
erosion
extraction
field
finance
fuel
gas
gasoline
gobi
industrial
industry
jack
land
landform
landscape
large
machine
nature
oil
operation
petroleum
pipe
pipeline
platform
pollution
pump
pumping
resources
rig
road
rocks
rural
steel
view
work
xinjiang