名词
中文翻译：Unknown
同义词：
['non-leap day', 'non-leap year', 'non-leap month']
例句：
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1. This year's non-leap year is the first time in history that it has been observed.
今年是首次观察到非闰年。
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2. The calendar system is based on the observation of the sun and moon, which means we have to account for leap years aswell.
日历系统是基于对太阳和月亮的观察，这意味着我们也必须考虑到闰年。
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3. In a non-leap year, there are 365 days instead of 366, which means we need to adjust our schedulesaccordingly.
在非闰年，有365天而不是366天，这意味着我们需要相应地调整我们的日程安排。