horizontal 词形变化: 副词: horizontally | 同义词: level | plane | flat | even | prone | prostrate | straight | 反义词: vertical | inclined | 词义辨析: 同义: a.水平的; 地平线的 level flat even plane 同义参见: flat1 prostrate prone plane1 反义: a.水平的; 横的 vertical