邪恶胜利的唯一必要条件是好人的无所作为。
The best management is a true science, resting upon clearly defined laws, rules, and principles as a foundation.
Success is not the key to happiness. Happiness is the key to success.
诗歌必须始终具有道德目的；它应该在愉悦的同时教导。
向新能源汽车的转变不仅是一种趋势，而且是可持续未来的必要条件。