vt.使同等（level的过去式与过去分词形式）； 双语释义：n.(名词)[C]水平线,水平面;水平高度 line or surface parallel to the horizon, especially with reference to its height[C]数量,强度 position on a scale of quantity, strength, value, etc.[U]水平,等级 relative position in rank, class or authorityadj.(