名词
中文翻译：树轮日历
同义词：
['year-round calendar', 'tree-ring calendar例句：1. The tree ring calendar is a great way to track the changing seasons.（树轮日历是追踪季节变化的一个很好的方法。）2. This tree ring calendar shows how many years have passed since the last record was taken.（这个树轮日历显示了上一次记录以来已经过去了多少年。）']
例句：
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1. The tree ring calendar is a great way to track the changing seasons.
树轮日历是追踪季节变化的一个很好的方法。
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2. This tree ring calendar shows how many years have passed since the last record was taken.
这个树轮日历显示了上一次记录以来已经过去了多少年。
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3.Using a tree ring calendar can help us better understand the history of our planet.
使用树轮日历可以帮助我们更好地了解地球的历史。