人们生产生活资料的方式首先取决于他们发现并必须再生产的实际手段的性质。

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

Laughing is good for you if you don't kill yourself.

音乐是灵魂的声音。

适应力是在快速变化市场中生存的关键。