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体的水生陆生或寄生环节动物。Having one estrous cycle per year. Used of certain mammals.

环节动物是柔软、黏湿的蠕虫，身体周围有环节。Annelids are soft, moist worms which have rings around their bodies.

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环节动物或昆虫的消化道中的类似扩大部分。A similar enlargement In the digestive tract of annelids and Insects.

本实验研究了水生环节动物星虫胶原蛋白的提取及纯化方法。In this study, the extraction and purification of collagen from Sipunculidae were studied.

雌雄同体的陆栖和水栖环节动物，只在沿身体部位有鬃毛。Hermaphroditic terrestrial and aquatic annelids having bristles borne singly along the length of the body.

如果它真的属于不同的门类，那么这个种群又如何连接软体动物、环节动物和节肢动物呢？If, indeed, it did belong to a different phylum, how did that group connect to the molluscs, annelids and arthropods?

他们对从英国的23个地点和欧洲大陆的5个位置收集的270条环节动物门chlorotica种蠕虫进行DNA测序。They sequenced the DNA of 270 A. chlorotica worms collected from 24 British sites and five mainland Europe locations.

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共发现大型底栖动物38种，隶属7门8纲23科，主要为软体动物、节肢动物和环节动物多毛类。We found a total of 38 species, belonging to 23 families, 8 classes and 7 phyla, most of them were arthropods and mollusks.

前肠节肢动物或环节动物的消化道的第一部分，包括口腔、食管、嗉囊和砂囊。The first part of the alimentary canal of an arthropod or annelid which includes the buccal cavity esophagus crop and gizzard.

身体上延伸出那覆有毛发，如同四肢一般的部分告诉了科学家们，该生物是一种环节动物。The presence of limb-like extensions on the body with furry bristles on them told the scientists that this creature was an annelid.

环节动物的S型凝集素在结构和生化性质上都有别于一般的S型凝集素，其在抗癌等研究方面的潜在价值重大。The S-type lectins in annelida are different in molecular structure and biochemical properties from that of common galectin and are valuable in anticancer study.

注意每只虫外部特徵的差异，观察环节动物1上众多的感觉构造及其多功能的附肢。Note the differences in the external features of each worm, namely the increased number of sensory structures and the presence of multifunctional appendages on annelid 1.

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任何各种无脊椎动物，像类群环节动物门、线虫纲，纽形动物门，或扁形动物门，有长、灵活、圆或扁平身体，通常没有明显的附件。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.

任何不同的无脊椎动物，作为门动物环节动物，线虫，纽形动物门，或扁形动物的，具有长期的，灵活的，圆形或扁平机构往往没有明显的附属物。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.