英文關鍵字
abrasion
air
american
ashokan
beech
birch
boughs
bushes
calm
catskill
catskills
christmas
city
clean
cobbles
cold
creek
dawn
dead
deciduous
determined
deviate
early
environment
erosion
evergreen
excercise
fall
flat
flow
flowing
fluvial
fresh
ground
h2o
haw
hemlock
high
hiking
hole
leafless
light
maple
moon
mountain
mountains
nature
new
oak
outdoors
park
preparations
preserve
pristine
refreshing
right
rocky
rounded
runoff
safety
shallow
silence
skilled
slope
split
state
steep
strewn
sugar
sunrise
susserus
swimming
trees
water
winter
wonderland
woodlands
woods
york