1.
Shellfish are crustaceans.
贝壳一类的动物属于甲壳类。
2.
pincers of a shellfish
（甲壳类动物的）钳,螯
3.
a kind of malacostracan crustacean.
一种甲壳类软甲亚纲动物。
4.
A temporary egg pouch in various fishes and crustaceans.
（鱼类和甲壳类动物的）临时卵袋
5.
54.5% of the biomass is occupied by Mollusea and 23.07% by Crustacea.
54.5%生物量是贝类,23.07%是甲壳类。
6.
small flat-bodied semi-terrestrial crustaceans: whale lice; sand-hoppers; skeleton shrimp.
小型扁体半陆生甲壳类；鲸虱；沙蚤；麦杆虫属端足类甲壳动物。
7.
a thick cream soup made from shellfish.
甲壳类动物制成的稠的奶油汤。
8.
Zoologists refer barnacles to Crustanceans.
动物学家把螺蛳归入甲壳类。
9.
minute planktonic or parasitic crustaceans.
浮游微生物或寄生甲壳类。
10.
Old World genus of isopod crustaceans.
陆生等足甲壳类旧大陆鼠妇科的一属。
11.
a paste of fish or shellfish.
鱼或甲壳类动物做成的酱。
12.
any of various edible decapod crustaceans.
各种可食用的十足甲壳类水生物。
13.
A pincerlike part, such as the large claw of a crustacean.
螯象钳的部分，如甲壳类动物的大螯
14.
The Effect of Environmental Stress on the Immune Activity of Several Marine Bivalve and Crustaceans
环境污染对几种海洋双壳类和甲壳类免疫活性的影响
15.
Species Composition and Distribution of Crustacea in Beibu Bay in Autumn and Winter
北部湾海域秋、冬季甲壳类的种类组成及分布
16.
meat of edible aquatic invertebrate with a shell (especially a mollusk or crustacean).
可食用的带壳水生无脊椎动物的肉（尤其是软体动物或甲壳类动物）。
17.
This kind of beetles have hard shell.
这类甲虫有坚硬的外壳。
18.
Chitin has a tight connection with human life.
甲壳素与人类的生命有着密切的关系。