Pretax profit surged almost twelvefold.

税前利润几乎暴涨到了以前的十二倍。

《柯林斯英汉双解大词典》

Production has soared twelvefold since 2000, to 4.9 trillion cubic feet, or a quarter of the country's total gas output.

从2000年开始，美国的页岩天然气产量已经激增了十二倍，达到了4.9万亿立方英尺，大约占全国天然气总产量的四分之一。

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It notes a doubling of traffic every 100 days, or about a twelvefold annual rise.

FORBES: Keep up or die

There has been a twelvefold increase in the number of students taking exams in religious education.

BBC: Religion pulls in GCSE students

Grameen sees its cash deposit multiply twelvefold on its way to the poverty-stricken borrower.

ECONOMIST: High finance benefits the poor