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41. | Of or relating to competitive downhill racing and slalom skiing events. |
| 下坡障碍赛的竞争性的下坡赛跑和障碍滑雪比赛,或与之有关的 |
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42. | descent propulsion |
| 下降推进 |
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43. | descent velocity |
| 下降速度 |
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44. | a parachute descent |
| 降落伞的下降 |
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45. | uterine descent |
| 母系 |
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46. | Here the path slopes down. |
| 小路从这里开始下坡。 |
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47. | descent function |
| 下降函数 |
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48. | transmissible by descent |
| 可凭世系传给下一代 |
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49. | recursive descent |
| 递归下降 |
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50. | terminal descent guidance |
| 末段下降制导 |
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