At a high level, metadata refers to information about data, such as its definition, structure, source, etc.

从高层面上说，元数据指关于数据的信息，比如数据的定义、结构、来源等等。

youdao

Throughout the eruption, satellite images have been nearly the only source of new information about activity at the volcano.

自从火山爆发以来，卫星图片几乎是关于火山活动新信息的唯一来源。

youdao

The Internet has become a liberating tool, with a limitless source of information at your fingertips.

互联网已经成为解放你的工具，使你的指尖拥有无限的信息资源。

youdao

"Private contractors are not happy about this, " says a source familiar with information security executives at contractors Northrup Grumman and Boeing.

FORBES: Magazine Article

"I look at Africa as a great source of information and inspiration, " says Samuelson.

CNN: SHARE THIS

An entrepreneur who is working on a top-secret NFC product told me today that he believes the iPhone 5 will have NFC and cited a friend who works at Apple as a reliable source for the information.

FORBES: Source: iPhone 5 May Have NFC Contactless Capability