noun 下载 🔗分享 日光仪,太阳仪。 A heliotrope (surveying instrument). Examples : "The surveyor used the helio to precisely measure the distance between the two buildings. " 测量员使用日光仪(太阳仪)精确地测量了两栋建筑之间的距离。 technology utensil device science 与AI对话词汇游戏阅读练习