damselfliesCOCA¹⁴⁵⁵⁹⁶BNC¹²⁶⁴¹⁶⁺⁴ 基本例句 n.蜻蜓原型damselfly的复数 This study has great significances for the biological monitoring of water pollution, damselflies habitat protection and the construction and transformation of wetlands in the city. 本研究对于水质污染的生物监测、豆娘栖息地的保护、城市中对于湿地的兴建和改造有十分重要的意义。 ecology.jnu.edu.cn