英文關鍵字
attentive
attractive
boy
caucasian
cell
cellphone
child
comfort
communicating
communication
commute
commuter
commuting
concentrated
device
enjoy
enthusiastic
focused
gadget
holiday
interest
interested
internet
locomotive
message
messaging
mobile
movement
old
passenger
phone
portrait
preschooler
public
railroad
railway
ride
rides
sit
smartphone
technologies
technology
tourist
train
transport
transportation
travel
traveler
traveling
travelling
uses
using
wagon
while
window
wireless
years