形容词
中文翻译：Unknown
同义词：
['retroactive', 'retrospective']
例句：
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2.
法律
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3.
债务
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1. The company's decision to revert to a previous policy was unexpected.
公司决定恢复以前的政策，这出乎意料。
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2. The law is retroactively effective from the date of the event.
该法律从事件发生之日起具有追溯力。
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3. The debtor must pay back the amount due within three years, which is a retroactive requirement.
债务人必须在三年内偿还所欠金额，这是一项有追溯效力的要求。