subsistence farming 自给农业 ; 少有余粮的农场经营 ; 自然经济 ; 生存农业
highly subsistence farming system 高度自给的农耕系统
subsistence E farming 少有余粮既农场经营
Increases in malnutrition are expected to be especially severe in countries where large populations depend on rain-fed subsistence farming.
在广大人民依赖于通过降雨维持生存农业的国家，营养不良的增长预计将尤为严重。
Poor soils, uneven terrain, and a severe climate led to typical "subsistence" farming, the growth of only those crops necessary for family maintenance.
贫瘠的土壤、崎岖的地表以及恶劣的气候造成典型的生存性农业，仅能种植维持农场家庭生存所必需的作物。
Rwanda's dependence on traditional subsistence farming meant that the only way to grow more food was to move onto ever more marginal land.
卢旺达是依赖于传统的只能维持生计的农业，从而意味着增加粮食生产的唯一途径就是把更多贫瘠的土地都开发出来。
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