In a quiet field, Dr. Dial, 57, with a shaved head and goatee, stands out with his evangelical zeal about understanding bird flight.

在一块安静的场地里，57岁剃着光头留有山羊胡的戴尔博士非常显眼，正如新教徒般狂热地研究着鸟类的飞行。

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Dr. Dial says some of his most important observations have been made watching a bird glide by while he is fly fishing, and then heading back to the lab with a new theory to test.

戴尔表示，一些最重要的观测结果是他在飞蝇钓时通过观察鸟类滑翔得到的，因此，当钓鱼活动结束后，他就带着要试验的新理论返回实验室了。

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