英文關鍵字
along
bark
bend
blade
blue
breaking
broken
bushes
cancer
carefully
cold
current
discovery
exactly
fish
floes
for
frozen
grinding
ice
large
lin
line
lower
lowers
master
minus
months
movement
nature
opening
plus
pond
power
reservoir
river
saw
sawing
size
spring
strength
temperature
trees
water
white
wood
wreck