1.cut back on 削减
例句:We shall have to cut back on our spending.
我们将不得不削减我们的经费
。2.be able to 能够
例句:We want a man who must be able to cost.
我们需要一个能计算成本的人
。3.step in to 介入
例句:But Thomas Hertel, an economist at Purdue University, says those markets can help solve our planetary problem — especially if we step in to make those markets work better.
但是,柏杜大学经济学家托马斯•赫特尔认为这些市场有助于解决地球问题——尤其当我们介入使得市场运转更顺畅时
。4.on a voluntary basis 在自愿的基础上
例句:Other officials suggested the term implies debtholders agreeing on a voluntary basis to accept laterrepayment.
其他官员暗示,这暗示债权人同意在自愿基础上接受延迟偿债.