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grounded neutral system中线接地制grounding fixed contact接地固定触端ground-effect vehicle地面效应气垫运载工具Ground Command Guidance地面指令制导ground-based PD radar地面PD雷达Groundwater drop funnel地下水漏斗ground-line treatment地际处理ground connection style接地形式groundcover cultivation地被栽培groundwater dynamic law地下水动态规律