名词短语
中文翻译：上坡和下坡方法
同义词：
['Step-Up', 'Step-Down', "Up-and-Down Method例句：1. The car's engine is designed to run efficiently on both up-and-down roads.（汽车的发动机设计成在上下坡路都能高效运行。）"]
例句：
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1. The car's engine is designed to run efficiently on both up-and-down roads.
汽车的发动机设计成在上下坡路都能高效运行。
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2.The engineer used a step-up and down method to optimize the system's performance.
工程师使用上坡和下坡的方法来优化系统的性能。
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3. The team implemented a step-up and down method to improve their delivery times.
团队实施了一个上坡和下坡的方法来提高他们的交付时间。