英文關鍵字
agriculture
angling
barrage
basin
becej
channel
confluence
construction
dam
deluge
drainage
embouchure
engineering
estuary
fall
fishing
flood
free
gate
gravitation
groyne
hydrosystem
inundation
irrigation
jetty
land
lock
navigation
penstock
pike
plum
preserve
pump
reclamation
river
sailing
system
tisa
water
waterfall
watering
waterpower
weir