Then the drum sound in a running state sounds like a man who is chasing the sun tirelessly.

后进入奔跑状态的鼓，仿佛一个不知疲倦的人在追赶太阳。

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With the right app, an iPhone could track the sun, sync shopping lists, be a drum machine, take restaurant reservations, be a cash register.

CNN: 5 ways the iPhone changed our lives