名词短语
中文翻译：上下坡耕作
同义词：
['slope farming', 'hillsidefarming', 'upland farming']
例句：
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1. The farmers are practicing up anddown slope cultivation to improvethe soil quality.
农民们正在练习上下坡耕作，以提高土壤质量。
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2. The farmer's decision to switch to up anddown slope cultivation has hada significant impact on the local economy.
农民决定转向上下坡耕作，对当地经济产生了重大影响。
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3. Up and down slopecultivation is an effective wayto conserve water and reduce soilerosion.
上下坡耕作是一种有效的方式来节约水资源和减少土壤侵蚀。