His extravagance explains why he is always in debt.

他挥霍无度, 难欠债。

He's always railing against his wife about her extravagance.

他责妻子奢。

We must combat extravagance and waste.

我们必须反对铺张。

Mr. Pearson’s income allows of no extravagance in his way of living.

尔逊先生的收入不允许他过奢的生活。