英文關鍵字
business
caucasian
cell
chatting
communication
commuter
commuting
conversation
couple
discussion
female
girl
holiday
internet
journey
leisure
lifestyle
male
man
mobile
modern
motion
movement
online
passenger
people
person
phone
platform
railroad
railway
relaxation
sitting
smartphone
talking
technology
telephone
together
tourist
train
trainstation
transport
transportation
travel
traveler
traveling
travelling
trip
vacation
voyage
wagon
window
woman
young