flightless

形容词 flightless:

1. incapable of flying

1. A genus of extinct, large, flightless birds native to Madagascar.
   象鸟，隆鸟一种不会飞的巨鸟，产于马达加斯加岛，现已绝种
2. The penguin is a flightless bird.
   企鹅是一种不会飞的鸟。

flight.less

adj.（形容词）
Incapable of flying. Used of certain birds, such as the penguin.
鸟不会飞的：不能飞行的。用于指企鹅等某类鸟