tracheas
n. 气管,导管,螺旋纹管( trachea的名词复数 )
A nematode worm ( Syngamus trachea ) that infects the tracheas of certain birds and causes gapes.
呵欠虫一种危害某些鸟类的气官并引起张口病的线虫 ( 气管比翼线虫比翼属 )