Marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces. small freshwater crustaceans with a shield-shaped carapace.

  • 海生甲壳动物,有羽毛状捕食的附肢;幼体独立游水;成体形成硬壳附着生活于水下。小型淡水甲壳动物,长有盾牌状甲壳。

  • 互联网摘选 2025-01-20 18:56:37

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句