quadruple的第三人称单数（三单）为：quadruples...

quadruple的现在进行时为：quadrupling...

quadruple的一般过去时为：quadrupled...

adj.四重的，四倍的，由四部份组成的n.四倍vt.& vi.使乘四或被四乘...

There was a proposal in the United States to quadruple its annual intake of immigrants.在美国有提案建议把每年移民的接收数量增加3倍。...a quadruple murder.四尸命案We have hope to quadruple the total industrial and agricultural output by the end of...

quadruple的音标：quadruple的英式发音音标为：[kwɒ'dru:pl]quadruple的美式发音音标为：[kwɑ'drupl]...

quadruple的现在完成时为：quadrupled...

They could sell their merchandise for quadruple the asking price.他们能够以4倍于要价的价钱出售他们的商品。We have hope to quadruple the total industrial and agricultural output by the end of the century, which is a lofty aim.我们有雄心壮志,到本世纪末, ...