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答案

“as is often the case”的中文意思是：这是常有的事。

扩展知识

另外这里附带下关于As is often the case的例句：

1、As is often the case, solving one problem can cause or uncover another.

然而情况常常是这样，解决一个问题往往会导致或揭示其他问题。

2、As is often the case, the fact that something is cheap doesn’t necessarily mean it’s of low quality.

正如情况所示，便宜的东西未必就质量不好