| 1. | It was a productive and fertile period .
这是一个硕果累累的时期。
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| 2. | India is a rich productive country .
印度是一个物产丰富的国家。
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| 3. | Timothy is exceptionally leafy and productive .
梯牧草特别多叶，且生长快。
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| 4. | Science and technology are no.1 productive forces .
科学技术是第一生产力。
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| 5. | They left the fields productive only of weeds .
他们离开了只生长野草的田地。
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| 6. | Their productive cycle covers several decades .
它们的生产周期可延续几十年。
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| 7. | It had always been productive and rich in gold .
它一直物产丰富，而且富有黄金。
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| 8. | Agroecosystems are often highly productive .
农业生态系统通常具有很高的生产力。
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| 9. | The grassland soils are generally the most productive .
草原土壤通常都是最肥沃的。
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| 10. | Farming is productive labor .
耕作是有生产价值的劳动。
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