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Upright Vertical Erect Perpendicular Plumb 这组词都有“垂直的、竖式的”的意思,其区别是:Upright 普通用词,指竖立、笔直而不是倾斜、倒塌的。Vertical 指与平面、水平线或基线成直角或几乎成直角向上延伸至顶点的物体。也可指呈直线上升或下降的。Erect

Front upright, vertical, erect, perpendicular, plumb
Back 这组词都有“垂直的、竖式的”的意思,其区别是:upright: 普通用词,指竖立、笔直而不是倾斜、倒塌的。vertical: 指与平面、水平线或基线成直角或几乎成直角向上延伸至顶点的物体。也可指呈直线上升或下降的。erect: 指笔直挺拔,而非倾斜、佝偻、弯曲或倒塌的。perpendicular: 指与水平线形成90度的线或面,或朝垂直方面延伸的,尤指向下的急剧运动。plumb: 建筑上用词,凭锤球评判某物是否完全垂直。

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