英文關鍵字
autumn
biology
boy
child
childhood
chill
education
elementary
enjoy
environment
fall
forest
fun
glass
grandfather
grandpa
grandparent
ground
homework
joy
kid
leaf
little
magnifying
maple
natural
naturalist
nature
november
october
outdoor
park
person
picking
playing
primary
promenade
schoolboy
schoolchild
schoolkid
science
scientific
september
structure
studying
time
together
work
yellow
youth