Any of various small marine clams of the genus Donax that are common in the coastal waters of the eastern and southern United States and have variously colored, often striped or banded shells.是什么意思_Any of various small marine clams of the genus Donax that are common in the coastal waters of the eastern and southern United States and have variously colored, often striped or banded shells.在线翻译_英语_读音_用法_例句