始祖鸟拥有羽毛，它身上既有现代鸟类的特征，也有远古爬行动物的痕迹，例如口中有牙齿，翅膀上有爪子，还有一条硕长的骨质尾巴。
It had feathers and other traits of living birds but also vestiges of a reptilian past, such as teeth in its mouth, claws on its wings, and a long, bony tail.
他又划起船来，注视着那只此刻正在水面上低低地飞掠的长翅膀黑鸟。
He went back to rowing and to watching the long-winged black bird who was working, now, low over the water.
他又回过头来划船，并注意看着那只长翅膀的黑鸟，现在，它正低低地飞在水面上准备觅食。
He went back to rowing and to watching the long-winged black bird who was working, now, low over the water.
就在这时，他看见一只长翅膀的黑色军舰鸟在他前方的天空中盘旋飞翔。
Just then he saw a man-of-war bird with his long black wings circling in the sky ahead of him.
就在这时，他看见一只长翅膀的黑色军舰鸟在他前方的天空中盘旋飞翔。
Just then he saw a man-of-war bird with his long black wings circling in the sky ahead of him.
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