不规则动词
中文翻译：变化
同义词：
['vary', 'alter', 'transform']
例句：
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1.The weather has changed dramatically since yesterday.
天气自昨天以来发生了巨大变化。
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2. The company has undergone a significant transformation in recent years.
该公司近年来经历了重大变革。
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3. The landscape has varied greatly since the beginning of the new century.
自新世纪开始，景观已经发生了很大变化。