Application of half-natural ecological treatment systems which possessing tertial treatment...
三是积极开展中水道技术的研究和应。
Application of half-natural ecological treatment systems which possessing tertial treatment...
三是积极开展中水道技术的研究和应。
Out in the open in the fine snow of Hokkaido cluster the great white cranes, the black tertial plumes of their broad wings arranged over their rumps like elegant bustles.
海道的旷野,丹顶鹤群聚柔细的白雪,双翅醒目的黑色羽毛优雅地围尾部,妇优雅的裙撑。
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