不要
abstract
accessory
addiction
background
cable
cell
cellphone
coil
communication
commutation
concept
connect
connection
cord
cordless
development
device
digital
electrical
electronic
equipment
freedom
future
gadget
hands
inconvenience
innovation
invention
isolated
male
messy
mobile
modern
needless
old
person
phone
progress
smart
smartphone
tangle
tech
technology
transition
usb
useless
white
wire
wireless