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- 研究 (4)
- 寒冷地区 (2)
- climatology (1)
- cold (1)
- ecology (1)
- effect of environment on (1)
- human beings (1)
- manners and customs (1)
- national characteristics, russian (1)
- ornamental shrubs (1)
- ornamental trees (1)
- ornamental tress (1)
- russia (federation) (1)
- severe storms (1)
- social aspects (1)
- survival (1)
- weather forecasting (1)
- winter (1)
- 关系 (1)
- 发电机组 (1)
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