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| 1. | marine animal with bivalve shell having a pair of arms bearing tentacles for capturing food; found worldwide |
| 有双壳的海生动物，有一对带有触须用于捕食的臂；世界各地均可见到。 |
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| 2. | The hard, siliceous bivalve shell of a diatom. |
| 硅藻细胞壳硅藻的坚硬含硅的硬壳 |
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| 3. | tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell. |
| 微小的海水及淡水甲壳动物，身体象虾，双壳。 |
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| 4. | A knoblike protuberance arising from a surface, as the prominence near the hinge of a bivalve shell or |
| 圆形隆起在一个表面突起的圆形装饰物似的隆起，如在双壳贝类贝壳边缘附近的突起或在含种子的球果顶端的突起 |
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