ground trainer地面: the earth's surface; ground教练设备: trainer教练设备: train frequency; trainer; training device逻辑教练设备: logic trainer潜艇教练设备: submarine training facilities下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:地面教练设备，即可在微信中查询翻译
