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| 物质世界; 自然世界 | |||
| 自然界 | |||
| natural world: 9 phrases in 7 subjects |
| Animal husbandry | 1 |
| Bodybuilding | 1 |
| China | 1 |
| Earth sciences | 1 |
| Sports | 1 |
| Technology | 2 |
| United Nations | 2 |
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