经济学的目标是理解如何以最高效的方式分配稀缺资源。

Smart electric vehicles are the biggest opportunity in the next decade, and China has the chance to lead globally.

所以根基树立不牢的人，不要期望有茂盛的枝叶。

Green development is not a multiple-choice question, but a must-answer question. We must unswervingly follow the path of green and low-carbon development.

制革厂的遗产应以其对环境的守护来衡量。

我们不仅仅是信息的被动接受者；我们积极地构建我们对世界的理解。