英文關鍵字
attention
bag
boy
carefully
child
childhood
children
closeup
concentration
curiosity
glass
hair
hand
holiday
journey
kid
leaning
location
look
metro
mind
moscow
moving
one
passenger
people
reading
riding
sit
sitting
speed
studies
subway
sweater
ticket
tourism
train
transport
transportation
travel
traveller
underground
window
yawning
young