I have used the sites a bit, but not that often.

我用过一些网址，但不那么频繁。

youdao

'We sometimes feel sorry for the men who are stuck in the office all day, but not that often.'

我们有时候为那些男人感到抱歉，他们成天卡在办公室里出不来，不过也不是太操心这事。

youdao

The spraying of pesticides can be carefully planned, but accidents, weather conditions that could not be foreseen, and pilot errors often cause much larger deposits of spray than they had anticipated.

杀虫剂的喷洒可以经过周密的计划，但意外事故、无法预见的天气状况以及飞行员的失误往往会导致比预期更多的喷洒量。

youdao

It's not often that you can foretell history, but I think we can in this case."

VOA: special.2010.04.28

They're not all found in every treaty, but they're often enough found that we can speak of these six elements.

它们并不是每个条约都能找到,但是提及六个部分，它们都能被找到。

耶鲁公开课 - 旧约导论课程节选

They often involve networks of reactions, not just one enzyme but a series of enzymes that serve to amplify each other.

这些反应通常包括一个反应网络,不只是一种酶,而是一系列的酶来进行级联放大

耶鲁公开课 - 生物医学工程探索课程节选

The idea is to check often enough so that you are aware of what is happening with your investments, but not so often that you are constantly tempted to tinker with your portfolio.

FORBES: Proactive Buy-And-Hold Strategy

"I don't often use that word but then it is not very often that you get to meet one, " he said.

BBC: Last 1953 Everest team member George Lowe dies, aged 89

But, you know, I mean, there are breakdowns often that - or not often, but, you know, the breakdowns, you know, happen in racing, and they are always painful to watch.

NPR: Heartbreak at the Preakness Stakes