the reproductive structure of some seed-bearing plants,characteristically having either specialized male or female organs or both male and female organs,such as stamens and a pistil,enclosed in an outer envelope of petals and sepals是什么意思_the reproductive structure of some seed-bearing plants,characteristically having either specialized male or female organs or both male and female organs,such as stamens and a pistil,enclosed in an outer envelope of petals and sepals在线翻译_英语_读音_用法_例句