00819756-n 'the conservation of petroleum resources';
 
汉语 石油 资源 保存 , 石油 资源 保护 , 石油资源保存 , 石油资源保护
英语 oil conservation
Definitions
英语
the conservation of petroleum resources
日语
石油資源の保護
Relations
Hypernym: conservation
Semantic Field: actn
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