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31. | artificial lightning |
| 人造电闪 |
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32. | artificial colloid |
| 人造胶体 |
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33. | artificial crater |
| 人造环形山 |
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34. | artificial planetoid |
| 人造小行星 |
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35. | artificial dielectric |
| 人造电介质 |
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36. | artificial grit |
| 人造磨石 |
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37. | artificial dyestuffs |
| 人造染料 |
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38. | artificial marble |
| 人造大理石 |
|
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| |
39. | artificial environment |
| 人造环境 |
|
|
| |
40. | artificial capillary |
| 人造毛细管 |
|
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