The effect of placing this code here is that for each portlet rendered on the page, you have an HTML comment placed below it that displays how many milliseconds it took to render that portlet.
在该处放置此代码的作用在于，对于页面上呈现的每个Portlet，您在其下放置了HTML注释，用于显示呈现该Portlet所花的毫秒数。
It then outputs all the comments as HTML code, exactly as was done on the original page but with the exception that this time, it displays the additional comment that the user provided.
然后，将所有的评论内容作为HTML代码输出，其方式与原始评级页面一样，只不过这次页面中额外显示了用户所提供的评论。
Indicates a comment that is not displayed. Prevents any enclosed text or HTML source code from being parsed and displayed in the browser window.
表示不可见的注释。防止所包含的文本或者HTML源代码被浏览器解析和显示。
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