This is a great application to study and learn from, especially if you need to build an e-commerce application of your own.

这是一个可供您研究和学习的绝佳应用程序，尤其是当您需要构建自己的电子商务应用程序时。

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P.S. Another practice of the sophisticated learner in modern times is to subscribe to Mission to Learn by RSS feed or by e-mail.

附注：当今社会，要想成为“老练的求知者”，还有一个法宝就是——按下“订阅键”或用电子邮件订阅“学海无涯”栏目哦。

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You're also likely to get a rude response if you send an E-mail anywhere along the lines of "I want to learn Shale, please send me some example applications."

如果您到处发送“我想学习Shale，请给我发送一些例子应用程序”之类的邮件，甚至还可能得到粗鲁的回答。

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More impressive is the e-reader's ability to learn your reading speed and give you information on how long it will take you to finish a chapter, or the entire book.

CNN: Review: Kindle Paperwhite is king of the e-readers

"We learn to exchange e-mail, make our own Web pages and, best of all, improve our English, " says Yang Yimei, who is from the town of Simao, in China's southwestern Yunnan province.

CNN: On-line in Yunnan

"In e-mail exchanges with overseas friends, we learn something about life in other countries, " says Sun.

CNN: On-line in Yunnan