该抽象类是所有表示字节输出流的类的父类。

This abstract class is the superclass of all classes representing an output stream of bytes.

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输出消息比 TCP/IP 流中的原始数据短 4 个字节。

The output message is four bytes shorter than the original data in the TCP/IP stream.

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但如果从源(例如一个静态VXML文件)传输到输出流的不仅仅是字节，那么直接处理字节的方式几乎无法管理控制。

However, dealing directly with bytes isn't nearly as manageable when you're not just transferring bytes from a source (like a static VXML file) to an output stream.

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