We have every reason to cancel the contract because you've failed to fulfil your part of it.
我们完全有理由取消合同,因为你们没有完成应遵守的合同内容,履行合同。
But, contrary to a popular assumption, it is far from being the only one, or even the greatest.
但是,和一般的看法相反,这决非是仅有的,甚至不是最主要的动机。