One of 22 species of diving seabirds (family Alcidae), most of which are black and white, with small wings, legs set far back on the body, and webbed feet. They fly far out to sea and nest in burrows or crevices, or colonially on cliff ledges.
Mike Allaby
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。