| 单词 | 不分节 |
| 释义 | 〔spider〕Any of numerous arachnids of the order Araneae, having a body divided into a cephalothorax bearing eight legs, two poison fangs, and two feelers and an unsegmented abdomen bearing several spinnerets that produce the silk used to make nests, cocoons, or webs for trapping insects.蜘蛛：一种蜘蛛纲蛛形目动物，身体分成长有八足的头胸部、两只毒牙、两条触角以及一个不分节的腹部，腹部上有几个吐丝器，能产生丝来织网、结茧，或结网以捕捉其他昆虫〔nematode〕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. Also called roundworm 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 也作 roundworm〔nemertean〕Any of several velvety, usually brightly colored worms of the phylum Nemertina (or Nemertea) that have a flat, unsegmented body with an extensible proboscis and live in the sea or in the mud of the intertidal zone. Also called ribbon worm 纽形动物：扁形动物门的一个纲，具有柔软身体、常常是鲜艳颜色的蠕虫，无体腔、不分节、可收缩，生活在海中或潮湿地带的泥中 也作 ribbon worm |
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