英文關鍵字
answering
application
backpack
backpacker
bad
battery
big
call
camping
catch
cellphone
chatting
communication
connection
device
display
frustrated
frustration
high
hiking
holding
low
male
man
mobile
mobilephone
mountaineering
network
notification
online
person
phone
poor
problem
quality
rock
sad
sitting
smartphone
talking
technology
telephone
top
tourism
tourist
trying
unhappy
wireless
worried
young