| 词汇 | swim bladder | 
| 释义 | swim bladder  noun [ C ]  biology specialized uk/ˈswɪm ˌblæd.ər/ us/ˈswɪm ˌblæd.ɚ/  (鱼的)鳔 an organ like a bag inside a fish that holds air so that it does not sink and stays in the correct position Synonym: air bladder  See also: bladder | 
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