短语词组短语authorised forerunner 路线员Forerunner Units 先行者单位forerunner earthquake 前震forerunner r 先驱;预兆;前兆Technique Forerunner 技术先进distortion forerunner 先至虚像;先至虚象forerunner n 前身Forerunner Music 唱片公司Forerunner Buildings 先行者建筑 返回 forerunner