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答案

“as is often the case”的中文意思是：這是常有的事。

擴展知識

另外這里附帶下關于As is often the case的例句：

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

然而情況常常是這樣，解決一個問題往往會導致或揭示其他問題。

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

正如情況所示，便宜的東西未必就質量不好