Stray birds of summer come to my window to sing and fly away。 And yellow leaves of autumn， which have no songs， flutter and fall there with a sigh。
夏天的飞鸟，飞到我窗前唱歌，又飞去了。 秋天的黄叶，他们没有什麼可唱的，只是叹息一声，飞落在那里。
Meeting energy demand while reducing emissions is the defining challenge of our time.
宇宙是一台量子计算机。
