It has no standard way of signalling the start and end of a message.

缺乏标准的方式标识一条消息的开始和结束。

youdao

I'll start by showing you the structure of the message itself.

首先来看消息自身的结构。

youdao

I'll start by showing you the structure of the message itself.

首先来看消息自身的结构。

youdao