英文關鍵字
autumn
bike
bottom
bred
breed
breeding
camp
canada
car
common
crossing
danger
dangerous
eat
eating
environment
family
fast
feather
fed
feed
feeding
feeds
flight
fly
food
fresh
gather
geese
greylag
grow
lake
life
live
lives
natural
nature
nesting
nests
park
population
road
roads
safe
safer
safety
species
traffic
travel
van
vehicle
water
world