The president's task is not easy. At home,critics accuse him of apologizing for America.

VOA: standard.2010.03.18

But it's not an easy task. Silicon Valley is very unique.

但这并不容易，硅谷是独一无二的。

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

But it's not an easy task. Silicon Valley is very unique.

但这并不容易，硅谷是独一无二的。

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