这次会议具备了作为高度戏剧性的政治事件的一切要素。The meeting had all the ingredients of high political drama.我认为取得成功唯一的共同要素是勤奋。I think the only common denominator of success is hard work.速度是所有田径运动项目的关键要素。Speed is the essential ingredient of all...
病人的免疫系统会对移植器官产生异质排斥反应。The patient'simmune system would reject the transplanted organ as a foreign object.但免疫疗法目前仍处于实验阶段。For the time being, however, immunotherapy is still in its experimental stages.瑜伽能增强人体免疫系统。Yoga...