单词	pneumatophore
释义	pneumatophore /ˈnjuːmətəfɔː / noun 1 Zoology The gas-filled float of some colonial coelenterates, such as the Portuguese man-of-war.Some but not all float by means of a large pneumatophore, or gas bag.... Some, but not all, float by means of a large pneumatophore. The Man-of-War floats on a gas-filled, blue to pink, translucent body called a pneumatophore. 2 Botany (In mangroves and other swamp plants) an aerial root specialized for gaseous exchange.No understory or ground level vegetation was present except for the pneumatophores of the mangrove trees.... Mangrove trees are adapted to these challenging conditions by producing shallow, horizontally oriented root systems with vertical, subaerial pneumatophores, which may stand up to 30 cm above water level in some species. The pneumatophores are erect side branches of the horizontal roots which grow just below the soil
随便看	press (the) flesh press time press tool press tradition press-up pressure pressure angle pressure arch pressure balance pressure bar pressure blower pressure boiler pressure bomb pressure breathing pressure-broadened pressure broadening pressure button pressure cabin pressure cable pressure cap pressure-cast pressure casting pressure chamber pressure-cook pressure cooker

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。