英文關鍵字
pipe
water
rain
flowing
drainage
drain
wall
storm
cracked
flood
overflow
broken
construction
flow
plastic
hole
concrete
pipeline
waterfall
stream
slow
motion
wet
supply
clean
pollution
pollute
piping
environment
drip
dark
grass
英文關鍵字
pipe
water
rain
flowing
drainage
drain
wall
storm
cracked
flood
overflow
broken
construction
flow
plastic
hole
concrete
pipeline
waterfall
stream
slow
motion
wet
supply
clean
pollution
pollute
piping
environment
drip
dark
grass