Sensors record each movement and send it by an ankle transmitter to a smart phone.

传感器记录下每个动作，然后通过脚踝传感器发送到智能手机上。

To enjoy the convenience of digital payment, many senior citizens started to use smart phone.

为了享受数字支付的便利，许多老年人开始使用智能手机。

People don't have a good sense of direction like me could travel without worries in another city with the help of a smart phone.

像我这样方向感不好的人，有了智能手机的帮助，也可以无所顾虑地去另一个城市旅行。

Some people blame the smart phone for the tragedy, yet in fact people's weakening self-control and self-discipline are to blame.

一些人把悲剧归咎于智能手机，然而事实上，人们自制力和自律性的减弱是罪魁祸首。

Get rid of your smart phone.

摆脱你的智能手机。