形容词
中文翻译：每隔一个月的
同义词：
['every month', 'every other month']
例句：
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1. The book is out of print, so I can only find it in second-hand stores every two months.
这本书已经绝版了，所以我每个月只能找到它两次。
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2. We need to plan our vacations every six months to make sure we have enough time off.
我们需要每六个月规划一次我们的假期，以确保我们有足够的时间休息。
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3. She decided to move to a new city every year, hoping for better job opportunities.
她决定每年换一个城市，希望能找到更好的工作机会。