名词
中文翻译：替代计划
同义词：
['substitute plan', 'backup plan']
例句：
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1. The company decided to implement an alternative plan for the project.
公司决定为该项目实施一个替代计划。
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2. He had a backup plan in case the original plan failed.
他有一个备用计划以防原计划失败。
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3. The alternative plan was more cost-effective than the original one.
这个替代计划比原来的更经济。