ObjectiveTo study the causes and prevention of stomach adynamia after pericardial devascularization ( PD ).目的探讨贲门周围血管离断术 ( PD ) 后胃动力障碍的原因与预防.The non exposure of the fracture zone means that additional devascularization o...
His secretary acts as a gatekeeper, reading all mail before it reaches her boss.老板的秘书负责把关，所有邮件都由她先过目再呈送给他。The old gatekeeper told them the streets were already closed to traffic.看门的李老头告诉他们:外面已经断绝交通了.Either the thief or t...