quadrupling meaning in English
n. 四倍
v. 使成四倍（quadruple的ing形式）
Examples
- the sample size would have to be quadrupled .
样本量必须增大三倍。 - the crop acreage could be quadrupled .
耕地面积可增加三倍。 - the grain output is quadrupled .
粮食产量翻了两番。 - the power utilities will need to quadruple their capacity .
电力事业必须使它们的能力增加三倍。 - "i think so too," replied barbicane; "that is why i propose to quadruple the length. "
“我也是这样想，”巴比康回答;“所以我建议把这个长度扩大三倍。”