Homogamy occurs in the closed cleistogamous flowers that appear late in the season in certain plants.导致发生自花授粉的可能性很大.Cleistogamous plants produce flowers which either open only partly or not at all.闭花受精植物产生的花只是部分地开放或完全不开放...
The ballerina remained suspended in a faultless arabesque.这位芭蕾舞女演员一直保持着完美的阿拉贝斯克舞姿不动。She moves with the natural grace of a ballerina.她的动作具有芭蕾舞演员自然优雅的丰姿。When she was a little girl , she dreamed of becoming a ballerina.她小时候...