换句话说，他认为这是规则的一个例外。

In other words, he figured it was an exception to the rule.

youdao

一般认为，腕表是男士珠宝演变过程中正常序列的一个例外。

It is generally believed that wrist watches are an exception to the normal sequence in the evolution of men's jewelry.

youdao

本条规则是上述要求不在此阶段设置中介属性的那条规则的一个例外。

This rule is an exception to the above rule of not setting mediation properties during this phase.

youdao

If nothing is touching the body, there are no forces on it, with one exception which is, of course, gravity.

如果没有实体接触,那么它就不受作用力,当然一个例外那就是引力

耶鲁公开课 - 基础物理课程节选

There are some exceptions, which we'll get to later, but the only a big exception here is with hydrogen, which has a special stability that's associated with two electrons.

但也有一些例外我们将以后再讲，但这里只有一个较大的例外，氢，它的稳定性比较特殊，只需要两个电子。

麻省理工公开课 - 化学原理课程节选

Every force, with one exception, can be seen as a force due to direct contact with the body.

除了一个例外,其它所有力必须要和物体有直接接触

耶鲁公开课 - 基础物理课程节选