any of various tropical marine gastropod mollusks,especially of the genera Strombus and Cassis,having large,often brightly colored spiral shells and edible flesh是什么意思_any of various tropical marine gastropod mollusks,especially of the genera Strombus and Cassis,having large,often brightly colored spiral shells and edible flesh在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句