英文關鍵字
angle
animal
autumn
beak
bird
color
countryside
domestic
duck
duckling
eating
ecology
environment
fall
family
farm
fauna
feather
feeding
floating
food
four
geese
green
grey
group
high
lake
leaves
life
mallard
many
multiple
natural
nature
outdoor
park
pond
rural
search
season
small
striped
surface
swimming
water
wave
white
wild
wildlife