groundproxn.[空](为避免撞地而装在飞机上的)贴地飞行导航仪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Grounding of CATV Systems有线电视系统接地ground motion attenuation地震动衰减groundwater investigation地下水勘察ground-based transistor基极接地晶体管groundnut early leaf spot花生褐斑病Ground work reinforcement地基加固ground wood waste-water磨木纸浆废水grounds of the university大学的校园ground-fault protection接地保护ground-state transition基态跃迁

1. Mail items may be handed over to the doorman or receptionist if such persons are present on the ground floor.
   一地面层设有管理服务人员或邮件收发处者，各类邮件得交管理服务人员或邮件收发处收领。
2. The showroom, which is housed in a former Victorian Factory, operates on two levels, with office spaces on the ground floor with the showroom located on the basement level.
   陈列室，这是住在前维多利亚厂，经营两个层次上，以办公空间在地面层的展厅设在地下一层。