英文關鍵字
aqua
bleed
bleeding
brook
brooklet
channel
creek
creeper
discharge
downcomer
drain
drainage
ecology
emission
environment
exhaust
exhaustion
flow
flowing
gutter
lander
launder
leak
leakage
outlet
overflow
pipe
plumbing
rain
river
rivulet
run
running
sanitation
sewer
shower
storm
stream
supply
system
tank
tap
torrent
torrential
unloading
wash
water
waterfall
weathering
wet