英文關鍵字
father
help
little
daughter
riding
bicycle
summer
park
pedaling
girl
treadle
female
male
young
kid
child
pushes
together
family
two
man
pathway
sport
active
health
nature
outdoor
path
cycle
bike
human
pedal
training
leisure
recreation
biker
biking
cyclist
exercise
fitness
lifestyle
motion
moving
race
ride
forest
tree
parent
issue