企鹅是一种不会飞的鸟.The penguin is a flightless bird.古生物学家还讨论了始祖鸟是否会飞的问题.Paleontologists also debated whether Archaeopteryx could fly.纽西兰人则骄傲地展示他们的鹬鸵, 一种不会飞的鸟.New Zealanders proudly display their kiwi , a native flightless bird....

“会飞的”的英语可以翻译为：volant ...