当你选择一些菜单或者功能描述文体时，遵循如下建议：
1.尽量简短。Keep it brief
2.尽量简单。Keep it simple
3.尽量友好。Be friendly
4.重要的优先展示。Put the most important thing first
5.尽量只有必要的，不多余。Describe only what's necessary, and no more
6.不重复。Avoid repetition
参考：
http://developer.android.com/design/style/writing.html