岁月流逝,光阴荏苒。转眼间,本刊已经创刊整整两年了。两年来,本刊发生了不小的变化:由季刊改为双月刊;由国内发行变为国内外公开发行;由自办发行扩大为邮局发行;栏目已基本实现了规范化;编辑质量有所提高。本刊的特点正在形成并受到读者、作者的喜爱。然而,这些变化都是在广大读者、作者及有关领导部门的支持下实现的。我们谨向大家至以衷心的感谢! Time goes by, time flies. Blink of an eye, this publication has been published for two full years. In the past two years, there have been a lot of changes in this magazine: from quarterly to bimonthly; from domestic distribution to domestic and overseas public offering; from self-issued distribution to post office distribution; column has basically achieved standardization; editorial quality has been raised. The characteristics of this publication are being formed and are loved by readers and authors. However, all these changes are made with the support of readers, authors and relevant leaders. We sincerely thank everyone!