青年人是世界的希望和未来，青年人有着蓬勃向上的生命活力和无穷的创造力。
Young people represent the hope and future of the world. They are full of vitality, new ideas and creativity.
第三，我们必须不断学习，因为我们的生命是一本无穷无尽的书。
Third, we must keep on learning, because our life is an infinite book.
我们的生命是什么？不过是长着翅膀的事实或事件的无穷的飞翔。
What is our life? But the fact of the wings of the fact or the endless flight of events.
应用推荐