1·It's something that someone else wrote or maybe you wrote, but you can encapsulate all of your ideas or your functionality inside this thing called a function.
它是别人或你自己写的，但是你可以压缩你所有的想法，或者你这个东西里面的功能叫做一个函数。
2·Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations.
将请求压缩为对象，使您能用不同的请求，队列或日志请求，参数化客户机，并支持可撤销的操作。
3·How can I mux (or encapsulate) H. 264 RTP output into a container using FFMPEG?
我怎么能复用器(或压缩)的H . 264 RTP输出到一个容器使用ffmpeg ？