every other month

基本解释

If you change your tagline every other month, people won’t remember it, and they might even get confused about it.
如果你没几个月就修改一下副标题，网友们就不容易记住，甚至会抗拒它。
blog.sina.com.cn
Article 3 The Standing Committee of the National People's Congress shall meet in session once every other month; an interim session may be convened when necessary.
第三条全国人民代表大会常务委员会会议一般每两个月举行一次；有特殊需要的时候，可以临时召集会议。
The dollar and the yen have both soared against nearly every other global currency over the past month as investors became convinced that a world-wide recession was looming.
过去一个月中，美元和日圆兑全球其他主要货币的汇率双双飙升，因为投资者确信一场全球性的经济衰退正在逼近。

Security consultants say a foreigner gets kidnapped, on average,once every other month in the country, with ransom payments for their release reaching hundreds of thousands of dollars.

Russians have been protesting Putin almost every other month, religiously, since October 2011.
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The field is evolving so fast that every time I do a lecture, every other month this year actually.
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We also have a communication magazine called the Link that goes to each of our stores every other month.
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