英文關鍵字
alpha
alphabet
and
animal
animated
animation
background
bird
black
channel
education
english
footage
foreground
front
isolated
letter
letters
motion
nature
pelican
preschool
video
white
wild
with
zoo
英文關鍵字
alpha
alphabet
and
animal
animated
animation
background
bird
black
channel
education
english
footage
foreground
front
isolated
letter
letters
motion
nature
pelican
preschool
video
white
wild
with
zoo