quadrupling/kwɑːˈdruː.pəl/形容词、前限定词大（或多）四倍a quadruple measure四倍大小/kwɑːˈdruː.pəl/动词（使）成四倍；（使）以四乘We expect to quadruple our profits this year.今年我们打算把利润翻两番。想跟读，去练习
