名词中文翻译1
中文翻译：Unknown
同义词：
['date line', 'date boundary', 'date lineage', 'date lineage']
例句：
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1. The scientistdrew a date line on the map to show the border between the two countries.
科学家在地图上画了一条日期线，以显示两国之间的边界。
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2. The date line is used to mark the beginning and end of each month.
日期线用于标记每个月份的开始和结束。
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3. The date line has been drawn on the map to indicate the location of the sunrise and sunset points for this year.
地图上已经画出了日期线，以指示今年日出和日落的位置。