swim bladder
(anatomy, usually of fish) A gas-filled sac within the bodies of most fish that variously acts as a float, lung, sound-producing organ or an aid to hearing.
plural of subsublessor
plural of rhumb line
Any of several chemical engineering processes including hydrogenation, hydrocracking and hydrotreating, especially as part of oil refining.
解剖の際、生物学者は感染の兆候がないかマスの浮き袋を慎重に調べた。
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