英文關鍵字
adult
african
american
book
bus
business
casual
chat
city
commuter
commuting
contemporary
enjoying
female
happy
headphones
hold
holiday
journey
knowledge
library
lifestyle
normal
note
passenger
pensive
pubblictransport
public
purple
railway
read
real
relaxing
serious
sit
smartphone
station
student
studying
subway
thinkingfuture
tram
transport
traveling
trip
tube
underground
using
woman
young