It's not a word in common usage.

这不是一个常用词。

《牛津词典》

There are several different detectors in common usage.

有几种不同的检测器可供平常使用。

youdao

In common usage, I think that they are more used interchangeably.

而我认为一般的用法是可以互换的。

youdao

While some may argue that RSS feeds (for Real Simple Syndication) have fallen from common usage in the social media era, how would Google explain the huge, instantaneous response on Twitter from Google Reader users?

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Today its most common usage is in the workplace where it refers to such things as flexi-time, variable hours and extended periods of leave.

ECONOMIST: Idea: Flexibility | The

But in this blog, I will accede to the common usage.

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