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31. | donor-acceptor chromogen |
| 给电子-受电子发色体 |
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32. | two-electron donor |
| 双电子供体 |
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33. | blood donor centre |
| 捐血站 |
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34. | A proton donor. |
| 质子供体 |
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35. | donor country | aid |
| 援助国 |
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36. | donor-acceptor bond |
| 给体-受体键 |
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37. | donor insemination procedure |
| 他精人工授精程序 |
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38. | electron pair donor |
| 电子对给体 |
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39. | donor type semiconductor |
| 施滞半导体 |
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40. | donor evaluation community |
| 捐助者评估团体 |
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