名词
中文翻译：打谷机
同义词：
['harvester', 'threshing machine']
例句：
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1. The farmer used a threshingrig to harvest the wheat.
农民使用一台打谷机来收割小麦。
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2. Thethreshing rig was designed forlarge-scale grain processing.
这台打谷机是为大规模粮食加工设计的。
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3. Thethreshing rig is essential forremoving the outer layers of the wheat beforeit's milled.
打谷机是去除小麦外层皮层，使其在磨制前变得重要的工具。