They've used ultraviolet light and some other techniques, and if you're interested in that sort of thing, you can learn more about it in an art conservation class.

他们使用了紫外线和其他一些技术，如果你对这类东西感兴趣，你可以在艺术保护课上了解更多。

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You need to design the overall book and learn some best practices of writing techniques so that the reader can easily understand what you are trying to explain.

你需要为写个整体框架，并学习一些很好的写作技巧以便读者能更容易明白你要说的内容。

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You'll also learn how to set up the Sprite using some basic CSS techniques (CSS background Sprite and CSS text image replacement).

同时你也会学习到应用基础CSS的技巧CSS背景图片翻转。

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Mr. Madrigal says he had to learn some newsgathering techniques, but he thinks all comedians are journalists in a way.

WSJ: Al Madrigal: Another Comic Springs Out of 'The Daily Show'

When we started this Fit Nation adventure back in April, I said my goal was to learn new habits and some techniques that would get me on the right weight-loss track.

CNN: Paging Dr. Gupta Blog

Some get over it faster or learn techniques to manage their fear.

FORBES: No Joke: A Comedian Conquers Fear of Public Speaking