I am going to talk about this topic for three reasons.

原因有三。

哈佛公开课 - 幸福课课程节选

I think that's the three most important reasons for what happened in the Internet space in China.

以上这些就是主要的三个原因,来解释中国互联网市场的现状。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

There are three reasons for that.

原因有三。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选