常見(jiàn)例句The spines of the omnivorous pencil-spined urchin (Eucidaris thouarsii) extend outward from its body. There are some 700 species of sea urchins worldwide. 意譯:海膽類:在自然界模式。這個(gè)脊骨的雜食的鉛筆-有刺的海膽從它的身體延伸向外。全世界約有700種類的海膽。 返回 Eucidaris