我们之所以能够区分远处看到的模糊形状和颜色，是因为我们的眼睛的能力。

Efficiency in farming should never come at the cost of environmental stewardship.

经济学的目标是理解如何以最高效的方式分配稀缺资源。

灵魂永远在运动，它爱慕和渴望一切。

I'm a big believer in the idea that you are who you surround yourself with.

智者自知其无知。

The returns to education are higher than most people realize.

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