Salute our youth that will be eventually wearing away或者:Salute youth that will be eventually wearing away (青春前的our可以略去,不说也知道)wear away 有消磨逝去的意思be + doing 正在(发生),+ eventually 终将(强调结果是-逝去)再者,干脆简单点: To Green Years 致青春. (适合做标题)