原级：quadruple
现在分词：quadrupling
过去分词：quadrupled
quadruples在线翻译
过去式：quadrupled
1. 四元组：quadrant 象限 | quadruples 四元组 | qualification 限定;资格;合格
1. Even if China's economy quadruples, the average Chinese will remain poor.
2. 911查询·英语单词
2. China plans to double its energy consumption as its economy quadruples by 2020, officials say.