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中国科考船发现两种罕见的深水海兔

文章来源:admin    时间:2019-05-29

  Discovery, a remote operated vehicle (ROV) aboard China's research vessel1 KEXUE (Science), captured two rare deep-water sea slugs in western Pacific Ocean in a recent dive.   中国科学号考察船上的发现号水下机器人最近在西太平洋发现了两种罕见的深水海兔。
    Sea slugs are hardly seen in deep-water (deeper than 200 meters), but Discovery gathered the two at the depth of 970 meters, according to Xu Kuidong, chief scientist aboard the vessel and a researcher of the Chinese Academy of Sciences (CAS).   The two sea slugs, with white bodies and pairs of bronze tentacles2 on pink heads, are about 5 cm long and 2 cm wide in the ocean, but they curled up after being taken to the vessel.   With varying levels of resemblance to terrestrial slugs, sea slugs actually belong to the family of snails3, or marine4 gastropod mollusks, and have lost their shells over evolutionary5 time.   There are about 3,000 species of sea slugs in the world and most of them are found in shallow water of tropical zones.   Eight species were discovered in the deep-water of northeastern Pacific Ocean, and none has been reported in the deep-water of western Pacific Ocean before.
1 vessel      n.船舶;容器,器皿;管,导管,血管 参考例句:
  • The vessel is fully loaded with cargo for Shanghai.这艘船满载货物驶往上海。
  • You should put the water into a vessel.你应该把水装入容器中。
2 tentacles      n.触手( tentacle的名词复数 );触角;触须;触毛 参考例句:
  • Tentacles of fear closed around her body. 恐惧的阴影笼罩着她。
  • Many molluscs have tentacles. 很多软体动物有触角。 来自《简明英汉词典》
3 snails      n.蜗牛;迟钝的人;蜗牛( snail的名词复数 ) 参考例句:
  • I think I'll try the snails for lunch—I'm feeling adventurous today. 我想我午餐要尝一下蜗牛——我今天很想冒险。 来自《简明英汉词典》
  • Most snails have shells on their backs. 大多数蜗牛背上有壳。 来自《简明英汉词典》
4 marine      adj.海的;海生的;航海的;海事的;n.水兵 参考例句:
  • Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
  • When the war broke out,he volunteered for the Marine Corps.战争爆发时,他自愿参加了海军陆战队。
5 evolutionary      adj.进化的;演化的,演变的;[生]进化论的 参考例句:
  • Life has its own evolutionary process.生命有其自身的进化过程。
  • These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。

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