| 单词 | 扁形动物 |
| 释义 | 〔flatworm〕Any of various parasitic and nonparasitic worms of the phylum Platyhelminthes, such as a tapeworm or a planarian, characteristically having a soft, flat, bilaterally symmetrical body and no body cavity. Also called platyhelminth 扁虫：扁形动物门的寄生或非寄生虫中的任一种，以具有柔软、扁平且两面对称的身体和无体腔为特征，如绦虫或涡虫 也作 platyhelminth〔nemertean〕Of or belonging to the phylum Nemertina (or Nemertea).扁形动物门的：扁形动物门的或属于扁形动物门〔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〔worm〕Any of various invertebrates, as those of the phyla Annelida, Nematoda, Nemertea, or Platyhelminthes, having a long, flexible, rounded or flattened body, often without obvious appendages.虫：几种无脊椎动物中的一种，如环节动物门、线虫类、纽形动物或扁形动物门，有长的、柔软的、圆的或扁平的身体，经常没有明显的附属肢体 |
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