草原上的羊群因狼的存在不断繁衍壮大，森林中的树木也因对手众多而长得高大挺拔，在现实生活中，要感谢你的敌人，你的进步和成熟是在与敌人的较量中逐步积累的。君不见，造物主从不让处处一帆风顺、事事顺心如意的人成为栋梁，从不让没有困难，没有厄运的人成为伟人。没有天 Due to the presence of the wolves continue to grow in the herd on the prairie, trees in the forest because of the large number of opponents grow tall and straight, in real life, to thank your enemies, your progress and maturity in the contest with the enemy Gradually accumulated. Do not you see, the Creator never let everything be smooth sailing, everything goes smoothly become pillars, never let no difficulty, no bad luck to become a great man. No day