1. Any of several worms of the phylum Nematoda, having unsegmented, cylindrical bodies, often narrowing at each end, and including parasitic forms such as the hookworm and pinworm. 
   线虫线虫纲动物的任何一种小虫，身体不分节，呈柱状，两头稍尖，包括钩虫和蛲虫一样的寄生虫
2. Progress toward what end? 
   进程的结果什么？
3. To what place; toward what end. 
   向那里；朝那个目标
4. toward the posterior end of the body. 
   朝向躯体背面的末端。
5. with the end forward or toward the observer. 
   末端朝着或向着观察者。

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• 1. 收针器
  收针凸头 narrowing tackle...收针器 narrowing toward each end...两边小 needle holders with narrow jaws
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