Within an hour, Hill says, one of his research assistants, Brian Rolek, spotted an ivory-bill in flight.

一个小时内，希尔的一名助手布莱恩·罗里克发现一只象牙喙啄木鸟正在飞翔。

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Within an hour, Hill says, one of his research assistants, Brian Rolek, spotted an ivory-bill in flight.

一个小时内，希尔的一名助手布莱恩·罗里克发现一只象牙喙啄木鸟正在飞翔。

youdao