英文關鍵字
1000
boat
boating
boiling
boils
bottleneck
camera
canoeing
canyon
cascade
cataract
cleft
cliff
defile
difficult
fall
falln
ferocious
foams
fps
gorge
great
high
jaw
jaws
kayak
kayaking
ledge
motion
mountain
muddy
narrow
narrows
niagara
notch
powerful
racing
raft
rafting
rapid
ravine
riffle
rise
river
rock
rocks
rough
rowing
sides
slow
speed
squeezed
stream
swirling
trough
valleys
walls
water
waterfall
whitewater
wingless