通过指导，还有一些其他的坏习惯可以去除，但是你并不需要正式的课程来加快你的阅读速度。
There are other bad habits that can be broken through instruction, but you do not need a formal course to increase your reading speed.
通过继承activity类来实现一个activity，阅读activities开发指导你能了解到更多。
An activity is implemented as a subclass of activity and you can learn more about it in the Activities developer guide.
你要通过大量训练来实现这点，需要有导师指导你如何利用培训。
You do this by getting lots of training, and mentors to guide you on how to use that training.
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