| 1. | Its tone has changed from decade to decade .
它的风气每隔十年就有变化。
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| 2. | Prices have risen steadily during the past decade .
过去十年来物价一直上涨。
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| 3. | Their productive cycle covers several decades .
它们的生产周期可延续几十年。
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| 4. | His interest in bureaucracies continued for over two decades .
他对科层制的兴趣持续了20多年。
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| 5. | Resistance to insecticides has been apparent for many decades .
杀虫剂抗药性的出现已有数十年。
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| 6. | The world's population has doubled during the last four decades .
过去40年中世界人口增加了一倍。
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| 7. | For some decades now, samples have been dredged from the ocean floors .
近几十年来，从海底取了样。
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| 8. | Veterinary virology has grown immensely during the past decade .
兽医病毒学在过去十年内发展非常迅速。
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| 9. | A fallacious proof was accepted as correct for a decade .
一个虚假的论证曾被认为正确，为时达十年之久。
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| 10. | Scientists have amassed considerable evidence over the past decade .
科学家在过去十年内积累了相当多的证据。
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