long-billed warm-water seabird with wide wingspan and forked tail
双语例句
用作名词 (n.)
Just then he saw a man-of-war bird with his long black wings circling in the sky ahead of him.He made a quick drop, slanting down on his back-swept wings, and then circled again. 就在这个时候，他看见一只军舰鸟，展开那长长的黑色翅膀，在他前方的天空中盘旋，突然之间，它将翅膀向后一收，倾身直往下伏冲，然后又开始盘旋。
