Such watershed infarctions can occur with relative or absolute hypoperfusion of the brain.相对或绝对的脑低灌注都可能造成这种梗死.There are several mechanisms of organ hypoperfusion and shock.器官血流灌注不足和休克可有多种机制引起.After acetazolamide stress t...
Thailand is at its most vibrant during the New Year celebrations.在欢度新年期间，泰国举国欢腾。The parks are decorated for the May Day celebrations.修饰公园,准备迎接五一.Universal celebrations are held and the whole nation is in elation.普天同庆,万众欢...
Ornithologists said it was too early too rule out feathered friends.鸟类学家则说,现在排除鸟类还为时尚早.Some ornithologists only Mute Swan classified as a swan.有些鸟类学家只将疣鼻天鹅归为天鹅属.The ornithologists made Vs with their thumbs and forefinger...