The direct cause of the damage and crash of the Chinese airplane was that the U.S. plane suddenly veered into the Chinese jet, which was against flight rule.

中方飞机坠毁的直接原因，是美机违反飞行规则突然向中方飞机转向、接近造成的。

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As for imitating avian anatomy to amplify airplane aerodynamics, Usherwood isn't wholly convinced - but he doesn't rule out the possibility, either.

至于模仿飞鸟飞行来改善飞机的空气动力学性能，Usherwood也不是完全有信心，但是他也并没有排除这种可能性。

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