A burro is carrying salt of one large bag backcross a river.有一头驴子驮着一大袋子盐过河.The method can be conveniently applied to practical backcross breeding programs.该方法可以很方便地应用于实际的回交育种....
They have been given college scholarships purely on athletic ability.他们完全是凭体育特长才获得了大学奖学金。Schools award scholarships for high academic achievement.学校向学业成绩优异者授予奖学金。They awarded scholarships to needy students.他们给贫苦学生颁发奖学金....
He used aphid fecundity data to elucidate the theoretical effects of antibiosis on insect population dynamics.他利用蚜虫繁殖力资料说明了抗生作用对虫口动态的理论效应.Produce broad - spectrum antibiosis and medicine served as raw material, etc.生产广谱抗...