| 1. | The observational data were irrefutable .
这些观测资料是不容怀疑的。
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| 2. | This is an extraordinary and provocative observational fact .
这是一个不平常的，激动人心的观测事实。
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| 3. | A number of entirely new experimental and observational methods have grown to maturity .
许多崭新的实验和观察方法已趋成熟。
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| 4. | The paramount task here facing observational astronomy is to study real interstellar clouds .
实测天文学在这里所面临的头等任务是研究实际的星际云。
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| 5. | In the second quarter of this century, enthusiasm for the observational approach began to wane .
在本世纪的第二个二十五年中，对观察法的热衷开始减弱。
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| 6. | All this was known thirty-five years ago; the great advances since then have come in the observational domain .
所有这些，在三十五年前就已经知道了，以后的重大进展则是在观测方面。
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| 7. | There is a positive observational and theoretical basis for believing that neutron stars and black holes follow as a result of supernovae .
中子星和黑洞则是超新星的产物，观测上和理论上的依据使我们相信这一点。
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| 8. | It is not a review article or a complete guide to all the recent literature. instead, it comprises a pedagogical package of select theoretical and observational scenaries .
它既不是评述文章，也未涉及全部近期文献，而更象一篇教学参考材料，精选了一批理论和观测结果。
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| 9. | New observational findings give us new insights
然而新的观测结果却给予我们新的启示。
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| 10. | Observational study on the extra - floral nectary of cherry and peach
樱桃和桃花外蜜腺的观察研究
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