书籍是人类灵魂的镜子,它们反映出我们最深层的恐惧和希望。
Sustainability is not a choice anymore; it's a necessity for survival in today's world.
译文:事前不研讨,遇变难以应对;军队不训练,作战难以取胜。强调未雨绸缪的重要性。