| 单词 | 双壳类 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔bivalve〕A mollusk, such as an oyster or a clam, that has a shell consisting of two hinged valves.双壳类：一种软体动物，如牡蛎或蛤，有由两个开合的瓣组成贝壳的动物美国传统〔bivalve〕Oysters and clams are bivalves.牡蛎和蛤是双壳类。英汉大词典〔cockle〕Any of various bivalve mollusks of the family Cardiidae, having rounded or heart-shaped shells with radiating ribs.鸟蛤：鸟蛤科双壳类软体动物，有放射状翅脉的圆的或心形外壳美国传统〔hinge〕A similar structure or part, such as one that enables the valves of a bivalve mollusk to open and close.类似铰链的装置：类似的结构或部分，如使双壳类软体动物的壳张开闭合的关节美国传统〔spat〕An oyster or similar bivalve mollusk in the larval stage, especially when it settles to the bottom and begins to develop a shell.幼牡蛎：幼虫时期的牡蛎或类似双壳类软体动物，尤指在海底开始开壳的美国传统〔spawn〕The eggs of aquatic animals such as bivalve mollusks, fishes, and amphibians.卵：双壳类软体动物、鱼类和两栖动物的水生动物的卵子美国传统 |
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