ostracoderm

英英释义

• n.

  1.an extinct, jawless, mainly freshwater fish, dating from the Silurian and Devonian periods, that had a flat body encased in a layer of protective bony plates and scales

英汉例句

• 1.Hill walkers find dinosaur bones sticking out of hillsides: schoolchildren pick up ostracoderm skeletons on the beach.

  登山者们会发现山坡上露出的恐龙骨骼，小学生们会在海滩上捡到甲胄鱼（ostracoderm）的骨骼。