名词
中文翻译：年度变化
同义词：
['annual variation', 'annual change']
例句：
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1. The temperature varies greatly from season to season.
温度随季节变化很大。
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2. This company has undergone several years of significant changes.
这家公司已经经历了几年的重大变革。
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3. The amount of rainfall yearly is a crucial factor in the local ecosystem.
每年降雨量是当地生态系统的一个重要因素。