Both groups share two attributes normally associated with vertebrates.两组都具有通常脊椎动物才具备的两个特征。We have already seen the sum total of his attributes.我们已经见识了他所有的那点儿品质。His cunning and guile were not attributes I would ever under...
生物班的学生研究了果蝇的繁殖.The biology class studied the generation of fruit flies.射线对于果蝇的遗传产生强烈的作用.Radiation has a strong effect on the heredity of fruit flies.果蝇的一种实验品系,翅膀缩小,称为残翅.One laboratory stock of Drosophila melanogaster has...