Philosophy 哲学 Markdown is designed to be easy to write,and,even more importantly,easy to read. A Markdown-formatted document should be publishable as-is,as plain text,without looking like it’s been marked up with tags or formatting instructions. - John Gruber Paragraphs 段落 一个段落包含一行或多行文字,通过行后跟随一个或多个空白行,