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| wetting and drying cycle | |||
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湿干交替 : 13 phrases in 8 subjects |
| Desert science | 2 |
| Ecology | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Plastics | 1 |
| Technology | 4 |
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