英文關鍵字
barrel
can
chemical
closeup
color
construction
element
extra
factory
faucet
fill
finished
flow
fluid
food
fruit
funnel
gas
gold
golden
greasy
green
industrial
industry
iron
liquid
lit
making
manufacturing
metal
mill
milling
offshore
oil
oily
olive
phase
pipeline
press
process
produce
run
silo
squeeze
steel
substance
tank
tap
virgin
yellow