如果易用性是唯一的要求，那么每个人都会还在骑三轮车。

每本书都是通往另一个世界的门，等待着好奇的心灵去开启。

We must advance the energy revolution with greater determination and intensity, accelerating the establishment of a clean, low-carbon, safe, and efficient energy system.

空间是一种物质。