1.
A member of the order Dibranchiata, a classification formerly used for the two - gilled cephalopods, which include the octopuses, cuttlefish, and squids.
二鳃目二鳃目的一员（一种正式使用于二鳃的头足纲动物的分类），包括章鱼、乌贼和鱿鱼
2.
order of extinct dibranchiate cephalopods related to the surviving spirulas.
已灭绝的二鳃目头足类动物目，与现存的旋壳乌贼相关。
3.
Objective: To discuss how to improve the level of diagnosis and treatment about the firstbranchial fistula.
目的：提高对第一鳃器瘘管的诊治水平。
4.
lampreys as distinguished from hagfishes.
与八目鳗类鱼区别开的七鳃鳗。
5.
hagfishes as distinguished from lampreys.
与七鳃鳗区别开的八目鳗类鱼。
6.
Removal of the second branchial cleft cyst using a retroauricular approach
耳后区进路切除第二鳃裂囊肿8例分析
7.
primitive jawless aquatic vertebrate: lampreys; hagfishes.
原始的无颚脊椎动物；七鳃鳗；八目鳗类鱼。
8.
large order of gastropods comprising univalve mollusks that have a single gill resembling a comb.
腹足类的一个很大的目，包含单壳软体动物，有一个梳状鳃。
9.
any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body.
裸鳃亚目的多种海栖腹足纲软体动物，无壳，通常体色美丽。
10.
Study on the Taxonomy and Zoogeography of the Family Bopyridae (Crustacea: Isopoda) in the China Seas;
中国海鳃虱科（甲壳动物亚门：等足目）的分类学及动物地理学研究
11.
A NEW SPECIES OF THE GENUS DIORYX BENSON FROM CHINA (PROSOBRANCHIA,MESOGASTROPODA,CYCLOPHORIDAE)
贵州沟螺属一新种记述(前鳃亚纲,中腹足目,环口螺科)
12.
A NEW SPECIES OF THE GENUS SCHISTOLOMA FROM CHINA (PROSOBRANCHIA,MESOGASTROPODA,PUPINIDAE)
中国裂唇螺属一新种记述(前鳃亚纲,中腹足目,蛹螺科)
13.
A gill or similar organ of respiration.
鳃鳃或类似的呼吸器官
14.
Any of various primitive elongated freshwater or anadromous fishes of the family Petromyzontidae, characteristically having a jawless sucking mouth with rasping teeth.
七鳃鳗，八目鳗一种七鳃鳗科的原始细长淡水或溯河产卵鱼，特点是长有无颌的吮吸嘴，嘴内有锉牙
15.
Pearl River Water System Alien Fish Monogenea Research Ⅱ.Two New Chinese Genera--Parasitizing the Gills of Hypostomus plecostomus
珠江水系外来鱼类单殖吸虫研究Ⅱ.清道夫鳃上单殖吸虫中国二新纪录属
16.
superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms.
鳗鲡状的脊索动物超类，没有咽喉和骨盆鳍；七鳃鳗；八目鳗类鱼；一些已灭绝的种类。
17.
The anterior part of a fish contains the head and gills.
鱼的前部包括头和鳃。
18.
The gills of a fish correspond to our lungs.
鱼的鳃相当于我们的肺。