备份文件是指利用下载部分所提供的示例备份脚本，所创建的文件。

The backup files referred to are the ones that you create using the sample backup scripts provided in the Downloads section.

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音译是指利用非常接近的语音将文字从一种语言转换成为另一种语言。

Transliteration means to convert words from one language to another language with a close approximation in phonetic sound.

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行型活字排版机一种商标，用于指利用键盘操作排成铅字条的排字机。

A trademark used for a machine that sets type on a metal slug, operated by a keyboard.

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Now thrifty metabolism means you make very good use of your calories.

现在,节俭代谢是指你充分利用卡路里

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选