名词
中文翻译：Unknown
同义词：
['three-harrows unit', 'three-harrow unit', 'three-harrow unit']
例句：
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1. The farmer used a three-harrow unit to till the fields.
农民使用三铧犁来翻耕田地。
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2.The three-harrow unit is an essential tool for farming in many parts of the world.
三铧犁是世界上许多地区农业耕作的重要工具。
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3. The three-harrow unit has been widely used in agriculture for centuries.
三铧犁在农业中被广泛使用了几个世纪。