通过纵向思维，Lenssen博士生成一种彩色产品，虽然很简单，但很实用。
But by thinking laterally, Dr Lenssen has come up with a colourful product that, though simpler, is still useful.
简单但很实用的免费应用程序的人谁扮演的古典和声学吉他，这个程序将帮助你调整它。
Simple but very useful free app for anyone who plays the Classical and Acoustic guitars, this app will help you tune it.
也许上面的几种急救方法很简单，但很实用，我们应该学习更多的急救方法去帮助更多的人。
Perhaps the tops above are very simple. However they are very practical and useful. We should learn more methods to help more and more people.
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