但是，有一个例外的垃圾场，它确实占了该场址消费总历史的很大一部分，人们已对其数量进行了估计。

However, there is one exceptional dump, which does represent a very large part of the site's total history of consumption and for which an estimate of quantity has been produced.

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但是有一个例外，而且很重要。

There's one exception, though, which is an important one.

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但是有一个例外，很严峻。

But there is one grim exception.

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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

A seeming exception is the fact that sometimes individuals can, through the exertion of their influence and prestige, actually change the way we speak about things.

也许有一个例外，有人的确看上去能用个人声望和影响，左右我们说话的方式。

耶鲁公开课 - 文学理论导论课程节选