groundagen.停泊费；进港税groundn.地面；地方；根据；主题；立场；水平；背景v.使停飞；困在家中；放在地上；使 ... 搁浅；打基础动词grind的过去式和过去分词形式ground tilt measurement地倾斜观测Groundnut rosette virus东非花生丛簇病毒grounded base amplifier共地幅度放大器Ground Playback Station地面录音重放站grounded magnetic storm地磁暴ground object detection地面目标探测ground state transition基态跃迁ground-holding policy地面等待策略ground instrumentataion地面仪表设备ground bus line network道路公交线网