Terms for subject Ecology containing major

English	Chinese
China’s Seven Major Water Bodies	中国七大流域七大水系 (i. e. the Liaohe River, the Haihe River, the Huaihe River, the Yellow River, the Songhua River, the Pearl River and the Yangtze River)
flood control systems for major cities	重要城市防洪体系
major chemical company	大型化学公司
major element in seawater	海水中的常量元素
major fungus resources	大型真菌植物资源
major habitat	主要生境
major influential factor	主导因子