1.
shelled animals like clams.
象蛤一样的有壳动物。
2.
study reproductionin shellfish
研究水生有壳动物的繁殖方法.
3.
testaceous echinoderms.
有界壳的棘皮类动物。
4.
Every crustacean has a layer of shell, which is also called the carapace.
甲壳动物体外都有一层几丁质外壳, 称为甲壳。
5.
small freshwater crustaceans with a shield-shaped carapace.
小型淡水甲壳动物，长有盾牌状甲壳。
6.
small freshwater crustaceans with a shield-shaped carapace
长有盾牌状甲壳的小型淡水甲壳动物
7.
having a hard shell or shell-like covering.
有硬壳或壳状遮盖物。
8.
somewhat heart-shaped sand-burrowing bivalve mollusks.
稍有心脏状掘沙的双壳类软体动物。
9.
marine gastropod mollusk having a very small thin shell.
海生腹足软体动物，有一层非常薄的壳。
10.
eight-armed cephalopod lacking an internal shell.
有八肢的头足类动物，无内壳。
11.
(zoology) used of mollusks having two shells (as clams etc.).
（动物学）用于形容有两个壳的软体动物（如蛤等）。
12.
The protective covering of certain animals, as the shell of a turtle.
甲壳某些动物身上有保护作用的覆盖物，例如乌龟的壳
13.
large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters.
大型可食用海生甲壳动物，壳上有刺但没有纯种龙虾的大钳子。
14.
edible marine bivalve having a fluted fan-shaped shell that swim by expelling water from the shell in a series of snapping motions.
可食用的海洋双壳类动物，壳呈扇形且有凹巢，通过一连串的张合动作将水逐出壳外而游动。
15.
Any of various bivalve mollusks of the family Cardiidae, having rounded or heart - shaped shells with radiating ribs.
鸟蛤鸟蛤科双壳类软体动物，有放射状翅脉的圆的或心形外壳
16.
Having a shell consisting of a single valve or piece.Used of a mollusk.
单壳的具有由单个瓣膜或部分组成的壳的。用于软体动物
17.
A protein substance that is the organic basis of mollusk shells.
贝壳硬蛋白作为软体动物贝壳有机基质的蛋白质
18.
common edible European bivalve mollusk having a rounded shell with radiating ribs.
普通的可食用欧洲产双壳类软体动物，圆壳并有辐射状肋骨。