名词
中文翻译：风选机
同义词：
['winnowing apparatus', 'wind-winnowing machine']
例句：
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1. The winnowing machine is used to separate the wheat from the chaff.
风选机用于将麦子与糠分离。
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2.The farmer uses a winnowing machine to clean the grains before they are sold.
农民使用风选机在出售前清理谷物。
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3. The winnowing machine is an essential tool for farmers in grain harvesting.
风选机是农民收割谷物时必不可少的工具。