Sometimes, by buying something cheap now, you will be costing yourself more in the long run.
有时候你花了很少钱买了便宜货,但它日后可能要花掉更多的钱。
They got on so well that Fred decided not to go to the lecture but to show the tourist around the university instead.
他们相处得很融洽,于是弗雷德决定不去听课,而带领这位游客到这所大学各处参观。