种间杂交的主要障碍是F1代的不育性.A major barrier to interspecific hybridization is sterility in the F 1 progeny.那是一株杂交的四季开花的蔷薇.That is a hybrid perpetual rose.骡子是一种杂交的变态产物, 本来是不该饲养的.Mules are misbegotten, unnatural critters and it ough...
谁说世界杯只是世界足球先生们的盛宴? 那里,同样有球迷如歌的欢腾.Is World Cup is only the feast of world soccer players?小调第八“悲怆”钢琴奏鸣曲, 作品 13—— 如歌的柔板乐章.Piano Sonata No.8 in C minor , Op . 13 , Pathetique : Adagio cantabile .本片有著深长悠远, 如歌的步调.The film has ...