“轮作”造句

为保持土壤肥力,农民搞作物轮作.
Farmers rotate their crops so that the soil will remain fertile.

农作物轮作有助于防止水土流失.
Crop rotation helps prevent soil erosion.

他连续5年在同一块地里种植不同的作物，研究人员称之为轮作。
He grew a different crop on the same field five years in a row, what researchers call crop rotation.

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