整个胃肠道具有某些共同的结构特点.The entire gastrointestinal canal presents certain common structural characteristics.急性溃疡形成是显著的胃肠出血的起因.Acute ulcerations were responsible for significant gastrointestinal bleeding.一例17 岁 男孩,有胃肠功能不良史,主诉腹痛...
就剩下我用指尖扒着悬空在几百英尺高的地方。I was left hanging by my finger-tips over a drop of hundreds of feet.他正一动不动地站在这悬空巨石的顶端,凝着神,敛着翅.He stands firmly at the top of a gigantic rock gazing afar.他的身体悬空片刻.For a moment he hung free....