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单词	sea urchin
释义	sea urchin noun A marine echinoderm having a spherical or flattened shell covered in mobile spines, with a mouth on the underside and calcareous jaws. Class Echinoidea. The sea urchin is one of the few marine organisms whose genome has been sequenced.... The inner shell of a sea urchin is a hollow globe, scored in five curved sections that taper at the ends into a small hole at the top and bottom. The red sea urchin's body is domed above and flat below.
随便看	concernment concern troll concern trolling concert concertante concertation concert band concert bill concerted concertedly concerteer concerter concertgoer concert grand concert hall concertina concertina fish concertina-like concertinist concertino concertist concertize concertmaster concertment concert music

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。