英文關鍵字
acid
aluminum
barrels
blue
cables
cistern
clean
construction
cosmetics
distillation
distillery
drums
ecological
empty
environment
evaporation
factory
good
green
industry
inside
liquid
machine
manufacturing
material
medical
milk
modern
natural
oil
pipes
plastic
polymer
pouring
pressure
process
production
reliable
rubber
space
squeeze
sterile
tall
toxic
work
workshop