Levels

level off 平整, 变平, 稳定 A level n. 英国GCE考试甲级标准 sea level n. 海平面 levels up levels off levels with levels out levels down levels to the ground level up 通过提高来拉平 [机] 使整齐 level out 把...弄平, 整平, 持平, 达到平衡, 稳定, (飞机)水平飞行 level down 拉平,降低 level with level to the ground A levels