如果托哥巨嘴鸟是在寒冷的爱尔兰进化而来的，它那令人印象深刻的喙部就会比现在小得多了。
If the toco toucan had evolved in chilly Ireland, its impressive bill would have been much more modest.
去年，加拿大安大略布鲁克大学的格伦·塔特索尔发现，托哥巨嘴鸟身体中高达60%的体温都会通过其喙部流失。
Last year Glenn Tattersall of Brock University in Ontario, Canada, found the toco toucan loses up to 60 per cent of its body heat through its beak.
去年，加拿大安大略布鲁克大学的格伦·塔特索尔发现，托哥巨嘴鸟身体中高达60%的体温都会通过其喙部流失。
Last year Glenn Tattersall of Brock University in Ontario, Canada, found the toco toucan loses up to 60 per cent of its body heat through its beak.
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