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

解释：凡是有利的地方，虽然是极高的山，没有不可以上去的；即令有极深的水，没有不可以下去的。

夏桀好商纣就是没有任用天下之贤士而遭到杀身之祸吗？所以说∶”赠送国宝,不如举荐贤能的人才。”

The future of food security lies beneath the waves—if we dare to farm it responsibly.

The health of our oceans is the health of our planet.

"Un buen libro es aquel que te cambia, aunque sea un poco."

"The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'"

P与NP问题是计算机科学中最重要的一个问题之一。