| 11. | In the American economy, the concept of private property embraces not only the ownership of productive resources but also certain rights, including the right to determine the price of a product or to make a free contract with another private individual. |
| 在美国经济中，私有财产的概念不仅包含对生产资源的所有权，也指其他一些特定的权利，如确定一个产品价格和与另一个私人个体(经济单位) 自由签定合同的权利。
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| 12. | This factory has a productive capacity of 200 cars a week. |
| 这座工厂具有每周生产二百辆汽车的能力。
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| 13. | productive farming land, manufacturing methods |
| 肥沃的农田, 富有成效的生产方法
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| 14. | a productive worker |
| 多产的工作者
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| 15. | productive activities |
| 生产活动
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| 16. | productive enterprise |
| 生产事业
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| 17. | productive labor |
| 生产劳动
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| 18. | productive fishing grounds |
| 多产的渔场
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| 19. | the most productive phase in this artist 's life |
| 这个艺术家一生中最多产的阶段
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| 20. | an amazingly [a surprisingly] productive enterprise |
| 具有惊人经济效益的企业
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