英语语法分析

A Microblog is a blog with very short entries.

微博客指的是条目很短的博客。

The business model for microblog advertising is simple.

微博广告宣传的商业模式很简单。

And microblog is a tree hole filled with our laughter and sorrow.

微博是个树洞，装满人们的欢笑与哀伤。