名词
中文翻译：谷物迁移
同义词：
['migration of grains', 'grain movement', 'grain flow']
例句：
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1. The farmers are worried about the grain migration affecting their crops.
农民们担心粮食迁移会影响他们的庄稼。
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2. The government is concerned about the impact of grain migration on food security.
政府对粮食迁移对食品安全的影响感到担忧。
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3.The migration of grains from one region to another has been a long-standing issue in agriculture.
从一个地方到另一个地方的谷物迁移一直是农业的一个长期问题。