To study pharmacokinetics and availability of national - apramycin sulfate by oral and intravenous administration in 5 pigs.对5头健康猪口服和静脉注射国产硫酸安普霉素,研究其在猪体内的药代动力学和生物利用度....
The hummingbird is the only bird that can fly backward.蜂鸟是唯一能倒退向后飞的鸟.The wings of a bee and those of a hummingbird are analogous.蜜蜂的翅膀和蜂雀的类似.The hummingbird perches on a twig of the hawthorn.小蜂鸟栖在山楂树枝上.A hummingbird is p...
He keeps coming to the aid of this damsel in distress.他不断出手相助这位落难女子。Adolescent suicide is rarely an impulsive reaction to immediate distress.青少年自杀很少是由于突然发生不幸而作出的冲动反应。Cecil now began to panic and fired off two distress ro...