n.呵欠虫（寄生于稚禽气管中，是张嘴病的病因）； 英英释义： GapewormA gapeworm (Syngamus trachea), also known as a red worm and forked worm, is a parasitic nematode worm infecting the tracheas of certain birds. The resulting disease, known as "gape"or "the gapes", occurs when the wor