For one thing, the stand-alone device can be kept on all day and night, while you will occasionally need to use your phone for other things.

一方面，单机设备可以保存所有的白天和黑夜，而你有时会需要使用其他的东西，如你的电话。

youdao

The integration of multiple sensor capabilities requires more in the way of security, reliability, and performance than a traditional stand-alone device.

的多个传感器功能的集成需要更多的安全性，可靠性，而且比传统的单独的设备性能的方式。

youdao

This makes the small portable presenter a very versatile stand-alone device.

ENGADGET: Toshiba outs Lumileo pico projectors, only one of which requires a plug

In addition, flash memory is making its way into more enterprise and client computer applications, both as a stand alone storage device and as a cache memory and system accelerator.

FORBES: The 25th Season of Flash

If this will suffice, then no problem, but even RIM admits that consumer focus is changing and tending toward a second communications link via 3G or 4G as a stand-alone device.

FORBES: The RIM Playbook: An "Evolving Concept"