In this case, you are specifying only a text body.
在本例中，我们只指定了一个文本主体。
Any number of response text documents can have their rich or plain text body field appended to an email message.
许多回复文本文档都可以将其富文本或纯文本正文字段附加到电子邮件消息后。
There are three parts: preface, main content and conclusion, in which the main text body has three chapters.
全文共分前言、主文和结论三部分，其中主文共三章。
For example, an application might choose to send both the plain text body and an HTML version of the message body.
例如，应用程序可能选择同时发送邮件正文的纯文本版本和HTML版本。
For example, you could define a Heading 1 paragraph to be followed by a Text Body paragraph.
例如，你可以定义一个标题1段，后面跟正文段。
For example, you could define a Heading 1 paragraph to be followed by a Text Body paragraph.
例如，你可以定义一个标题1段，后面跟正文段。
应用推荐