英文關鍵字
background
bathroom
color
contamination
copy
dirty
drain
drink
ecology
environment
equipment
faucet
flowing
industry
life
liquid
main
mud
outflow
pipe
plumbing
pollute
pollution
running
rust
rusty
sink
space
supply
tap
text
toxic
tube
valve
washbasin
washbowl
washing
washstand
water
waterpipe
wet
white