v.背信；违约
You will almost surely have to renege on some of these promises. 你却几乎必然将违背你的一些诺言。
It says firmly that the EU must not renege on its promise. 报告非常坚定地声称欧盟一定不会食言。
But there is also a temptation to renege to gain sales, much as one prisoner might end up ratting on another. 但违背约定，降低价格来赢得销售也很诱人，正如其中一个囚徒会出卖同伴，先说出供词。
v.背信；违约
