Slim 模板语言里关于输出=标记有一段说明怎么也看不明白，请指点一下？？？的地方，谢谢！
Output =
输出标记 =
The equal sign tells Slim it's a Ruby call that produces output to add to the buffer. If your ruby code needs to use multiple lines, append a backslash \ at the end of the lines, for example:
这个=告诉Slim它是Ruby调用产生到缓存的输出。如果你的Ruby代码使用多行，在断行结尾要追加\，就像下面范例：
= javascript_include_tag \
"jquery",
"application"
If your line ends with comma , (e.g because of a method call) you don't need the additional backslash before the linebreak. For trailing or leading whitespace the modifiers > and < are supported.
如果行尾是，号（是由于某些方法的调用）就不需要在断行处加入反斜杠\标记。？？？？？？？？？没翻译这句啥意思
Output with trailing white space =>. Same as the single equal sign (=), except that it adds a trailing white space.
？？？？？？？？没翻译这句啥意思
Output with leading white space =<. Same as the single equal sign (=), except that it adds a leading white space.
？？？？？？？？没翻译这句啥意思
对啊……问题出在哪里了？=后面会运行一段 Ruby 代码，其返回值在经过 html_safe 处理后放在页面上。但因为 slim 是按行解析的，所以默认 Ruby 代码会写在一行中，所以如果一行没完就需要加入\提示说下面一行仍然是 Ruby 代码。,和=>一类的也很明确，就是指代后面还需有一个 Ruby Object，如果已到行末就去下一行找了……
For trailing or leading whitespace the modifiers > and < are supported.
头和尾部的空格需要调剂 通过< > 来支持，到底是什么意思，没明白呀
Output with trailing white space =>. Same as the single equal sign (=), except that it adds a trailing white space.
输出如果带着行尾空格 => 符号是同样是=，除了它还要在尾部追加空格，也没明白
Output with leading white space =<. Same as the single equal sign (=), except that it adds a leading white space
这几句没看懂啊，翻译过来什么意思啊？能举个简单例子吗？多谢啦，新手别见笑。
