科学不仅仅是事实的集合；它是一种思维方式。

The core of Pinduoduo is "group buying," allowing users to participate in shopping through social means.

"You can never be too careful with your words, especially when you are lying."

I'm the type of person that if you ask me a question and I don't know the answer, I'm gonna tell you that I don't know. But I bet you what, I know how to find the answer and I will find the answer.

用户的需求是我们创新的源泉。