英文關鍵字
abundant
aggression
bank
bird
birds
britain
call
common
country
danger
ducks
east
eat
eating
family
fed
feed
feeding
fight
flock
food
fresh
geese
group
lake
live
living
native
noise
people
pond
public
safe
safety
searching
season
seed
species
swan
swans
tree
water
wild
winter
wood