1. Any of various often parasitic nematode worms, such as the vinegar eel. 
   鳗蛔虫任一种寄生线虫，如醋鳗鲡
2. A small nematode worm(Anguina tritici) that is parasitic on and destructive to wheat. 
   小麦线虫一种小的线虫（小麦粒瘿线虫鳗属）寄生于小麦并对小麦有毁灭性作用
3. 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）
4. Any of various nematode worms of the family Ascaridae, which includes the common intestinal parasite Ascaris lumbricoides. 
   蛔虫一种蛔虫科的线形虫，包括一般的肠内寄生虫蚓状蛔虫属
5. A slender, whip-shaped, parasitic nematode worm(Trichuris trichiura) that often infests the intestine of human beings. 
   鞭虫一种细长、鞭状的寄生线虫（人鞭虫）属，常感染人体内部

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