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| 51. | naturally air-cooled |
| 空气自冷式 |
|
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| | |
| 52. | naturally-occurring repository |
| 天然资源储藏所 |
|
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| | |
| 53. | naturally-occurring uranium |
| 天然铀 |
|
|
| | |
| 54. | naturally curly hair |
| 天然鬈发 |
|
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| | |
| 55. | naturally alloyed steel |
| 天然合金钢 |
|
|
| | |
| 56. | naturally acquired immunity |
| 天然获得性免疫 |
|
|
| | |
| 57. | naturally occurring radioactivity |
| 天然来源的放射性 |
|
|
| | |
| 58. | naturally alloyed iron |
| 天然铁合金 |
|
|
| | |
| 59. | naturally pigmented wool |
| 天然有色羊毛 |
|
|
| | |
| 60. | naturally ventilated staircase |
| 自然通风楼梯 |
|
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| | |