为了使飞机的空气动力学性能达到最好，他们对典型的飞机设计再组合后，得出了一个让人眼前一亮的初步的答案：飞机应该看起来更像鸟儿。
After reconfiguring the typical plane design in order to maximize the plane's aerodynamics, they came up with a brilliantly basic answer: Airplanes should look more like birds.
他们先自己初步决定出一个答案。
Kumar参加了一个由多个医院协作的研究项目，旨在找出其答案。初步结果显示，病症的严重性与HLA(人白细胞抗原系统，一种免疫系统内的基因变异)有关。
Kumar is coordinating a multi-hospital study of severe H1N1 to find out, but says preliminary results suggest severity is linked to HLA, a genetic variation in immune systems.
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