A freshwater bivalve mollusc that is smaller and darker than the related swan mussel, found in rivers with sandy or gravelly beds.
Anodonta anatina, family Unionidae
A freshwater bivalve mollusk that is smaller and darker than the related swan mussel, found in rivers with sandy or gravelly bottoms.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。