sea urchin

• Echinoderm - short - spined sea urchin
  棘皮类短棘海胆
• He compares sea urchins to rabbits and other grazers found on land
  把海胆与兔子和其它陆生食草动物作个比较。
• A fine , sharp projection , as a spine of a sea urchin or a crystal
  针状物精细尖锐的突出物，如海胆的脊椎骨或水晶球
• But missing among the sea urchin genes are some genes found in flies and worms
  但是海胆缺失了在苍蝇和蠕虫中发现的基因。
• Sea urchins and humans have a remarkable amount in common ? genetically speaking
  基因显示，海胆与人类拥有相当数量的相似之处。
• The sea urchin is one of the few marine organisms whose genome has been sequenced
  海胆是已经进行基因排序的海洋生物中的一种。
• Long spined sea urchin
  刺冠海胆
• Salted sea urchin
  盐渍海胆酱
• Too many sea urchins can virtually clear - cut the underwater kelp forest where fish live and hide
  过量的海胆会把海藻吃光，令鱼类失去栖息地。
• Scientists have long used sea urchins to study fertilization and early development in humans
  科学家们一直用海胆来研究受精卵和人类早期形态。