英文關鍵字
pass
man
trash
bag
father
movement
move
grass
forest
tree
wood
garden
park
calm
three
children
kid
collect
good
gather
recycle
green
life
outdoor
health
nature
preserve
person
adult
male
protect
garbage
pollute
glass
litter
fireplace
leave
plastic
time
lapse
fast
spring
environment
birch
russia