We shall discuss quadruples, triples, trees, and indirect triples.

我们将讨论四元组，三元组，树和间接三元组。

As the country's deficit quadruples, everyone's worried about the devaluation of the dollar.

随着国家赤字的成倍增加，人们开始担心美元贬值。

In fact, giving birth after age 40 more than quadruples a woman's chances of living to 100.

事实上，40岁后怀孕生小孩的女人活到100岁的概率增加了4倍。

During this time, turnover increases 18-fold, car production quadruples and motorcycle production triples.

在此期间，公司营业额增长了18倍，汽车产量增长了三倍，摩托车产量增两倍。