crustacean

英 [krʌˈsteɪʃn]

美 [krʌˈsteɪʃn]

n.  甲壳纲动物(如螃蟹、龙虾和褐虾)

复数：crustaceans　

TOEFL

BNC.25694 / COCA.20077

牛津词典

noun

• 甲壳纲动物（如螃蟹、龙虾和褐虾）
  any creature with a soft body that is divided into sections, and a hard outer shell. Most crustaceans live in water. Crabs , lobsters and shrimps are all crustaceans .

柯林斯词典

• 甲壳纲动物(如螃蟹、龙虾和褐虾)
  Acrustaceanis an animal with a hard shell and several pairs of legs, which usually lives in water. Crabs, lobsters, and shrimps are crustaceans.

英英释义

noun

• any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton

adj

• of or belonging to the class Crustacea
  Synonym:crustaceous

双语例句

• Small freshwater decapod crustacean that resembles a lobster.
  小型淡水十足甲壳动物，象龙虾。
• A hard bony or chitinous outer covering, such as the fused dorsal plates of a turtle or the portion of the exoskeleton covering the head and thorax of a crustacean.
  硬壳，背甲，头胸甲一种硬骨质或甲壳质外部覆盖物，如海龟融为一体的背部板形器官，或甲壳纲动物覆盖头胸部的外骨骼部分。
• 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）。
• The question is, of course, whether this small crustacean are fed properly using standard fish feed.
  问题是这小甲壳动物能否使用标准鱼饲料来喂养。
• Captain Nemo alerted his companion to this hideous crustacean, which a swing of the rifle butt quickly brought down, and I watched the monster's horrible legs writhing in dreadful convulsions.
  尼摩船长把这个怕人的甲壳类动物指给他的同伴看，他的同伴一枪托打死了它，我看见这个怪物的丑陋脚爪作怕人的抽搐，拼命挣扎。
• His retinue of crustacean ministers and generals were as alarmed as he but none could come up with any plan to stop the First Emperor from moving the mountains into the seas. This crab has lost his weaponry and is about to lose even more.
  乌龟丞相、虾兵蟹将们都急得团团转，但谁也想不出办法来阻止秦始皇赶山填海。这只蟹不仅丢了兵器，大概还会有更多的不测。
• 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。
• This paper reviewed the structure of Y-organ, the types, biosynthesis pathway and its regulation, secretory way and excretion of ecdysteroids in crustacean, and the function of ecdysteroid.
  作者综述了甲壳动物Y器官的形态结构，蜕皮甾类的种类、合成途径及调控、分泌方式、排泄以及作用。
• 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。
• Polyploid Induction and Sex Control in Several Economically Important Crustacean Species
  重要水产养殖虾蟹类的多倍体诱导及性别控制研究