vt.& vi.堆积，积累；vi.（数量）逐渐增加，（质量）渐渐提高； 变形： 过去式：accumulated过去分词：accumulated现在分词：accumulating第三人称单数：accumulates 双语释义：v.(动词)vt. 积累; 积聚 gradually get more and more of sth over a period of timevi. 累积; 聚积 gradually increase in number or quality over a period of ti