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31. | single seed descent |
| 单粒传法 |
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32. | a rapid descent |
| 急陡的下坡 |
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33. | descent of piston |
| 活塞下行 |
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34. | a long switchback descent |
| 长而弯曲的下坡路 |
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35. | descent of testicle |
| 睾丸下降 |
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36. | steep descent algorithm |
| 陡降算法 |
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37. | descent propulsion system |
| 降落推进系统 |
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38. | canons of descent |
| 不动产继承顺序 |
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39. | family origin,descent |
| 家庭出身,门第 |
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40. | a parachute descent [ drop ] |
| 降落伞降下 |
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