river mussel

短语

词形变化

river mussels 复数 river mussels

释义与例句

n.
  1. 1.

    Certain bivalve mollusks of order Unionida, found in flowing fresh water:

    especially of genera Unio and Anodonta, both found in rivers of the central U.S. with a shell lined with mother-of-pearl.

    美国
  2. 2.

    Certain bivalve mollusks of order Unionida, found in flowing fresh water:

    species Alathyria jacksoni within the family Hyriidae

    澳大利亚