These are realized by separating service descriptions from their implementations, and using this descriptive metadata across the service life cycle.

这些是通过将服务描述与其实现分离并在整个服务生命周期中使用该描述性元数据来实现的。

youdao

Each entry contains descriptive metadata, including a title, a block of text or HTML content, and a URL for more information.

每个项都包含描述性元数据，其中包括一个名称、一块文本或HTML内容，以及一个指向更多信息的URL。

youdao

I think it is useful to think of four sources of descriptive metadata in libraries.

我觉得把图书馆中的描述性元数据分为四类对于我们不无裨益。

youdao

These APIs enable the recognition of music from text lookups, CDs, digital files and audio captured with a mobile device, and returns descriptive metadata for more than 2, 000 music genres and sub-genres, artist origins, and more than 100 music moods.

ENGADGET: Gracenote unleashes its vast musical know-how to developers