I don’t think you can compare different eras. Every era has its own challenges and its own special things.

The world needs all forms of energy to meet growing demand, and natural gas is a cleaner alternative that can help bridge the gap.

人民是根，人民是基础，人民是力量的源泉。

"Tennis is a mental game. Everyone is fit, everyone hits great shots."

作家的生活是一种痴迷的生活。