(saying)people say that something is the exception that proves the rule when they are stating something that seems to be different from the normal situation, but they mean that the normal situation remains true in general反证规律的例外；足以证明普遍性的例外
Most electronics companies have not done well this year, but ours is the exception that proves the rule.今年多数电子公司都不景气，而我们公司却是普遍中的例外。