Meeting energy demand while reducing emissions is the defining challenge of our time.
To lose one parent may be regarded as a misfortune; to lose both looks like carelessness.
包括白色背景在内的六种颜色代表了世界上所有国旗的颜色......这是一个真正的国际标志。
"Writing is an act of courage, a way to confront the world and our place within it."