A chained exception is one that allows you to attach a "causative" exception to the exception being thrown.

一个链式异常是这样一种异常，它允许您将一个“成因”异常附加到正在抛出的异常。

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The code in Listing 1 is fairly straightforward; we've simply chained together multiple exceptions to create a single, nested exception.

清单1中的代码很简单；我们已经简单地将多个异常“串”在一起，以创建单个、嵌套的异常。

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