Nothing is forever, and the time comes when we all must say goodbye to the world we knew, goodbye to everything we had taken for granted, goodbye to those we thought would never abandon us, and when these changes finally do occur, when the familiar has departed, and the unfamiliar has taken its place, all any of us can really do is to say hello…and welcome!没有东西是永恒的。我们都会有离开世界的那一刻，那时我们要向曾经熟悉的世界说再见，向曾经没有珍惜的一切说再见，向我们曾认为不会抛弃我们的人说再见。当熟悉变得陌生，当陌生变成习惯的时候，我们只能无力的说声：哈罗，欢迎！