Nowadays, software programs are complex, and heavily rely on third party components and libraries.

现代的软件项目已经非常复杂，并且开始严重依赖第三方的构件和库。

youdao

Components of an application, including modules and libraries, can be at different versions.

一个应用程序的各个组件(包括模块和库)可以是不同的版本。

youdao

DBC is especially valuable when you're dealing with external components or libraries and need to ensure that the data your application passes to them and receives from them is correct.

在处理外部组件或者库，并需要保证应用程序传递给它们的数据和从它们那里接收的数据是正确的时候，DBC特别有用。

youdao

Because of the point above, most of the libraries for these shared components are written and updated first in PHP.

FORBES: What Is It Like To Be A Programmer At Zynga?

Users do not even need to be in the same room as their Denon or Marantz components to play, pause, skip, and stop the songs in their iTunes libraries.

ENGADGET: Denon and Marantz AirPlay update finally released for $49