Conclusions The efficacy of sulindac is significant in regressing colonic adenomas of patients with FAP.结论舒林酸对FAP疗效显著,可使腺瘤明显消退.A teaching aim is the starting point and regressing point of class teaching.教学目标是课堂教学的出发点和回归点...
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...