短語詞組短語upright sitting position 坐姿耑正upright sitting position headrest 垂直坐位頭靠Tables for upright working position 寫字臺perfect upright position 完美的竪直位置;完美的直立位置Varix in upright position 靜脈曲張的縱切麪full upright position 完全直立位置in an upright position 起牀Store cylinders in upright position 垂直放置氣瓶 返回 upright position