经济理论提供工具，但现实世界的测试会完善它们。

粉丝们的爱和支持是我们前进的动力。

The infrastructure industry must transform towards green development to achieve sustainability.

The first lesson reading teaches is how to be alone.

热闹荣华的光景，过后即生空虚凄凉；而清淡脱俗的作为，才能历久而更有意味。