最終更新日：2025/12/06
During the observation, the juvenile fish ventilated opercularly, rhythmically flaring its gill covers to draw water over the gills.
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During the observation, the juvenile fish ventilated opercularly, rhythmically flaring its gill covers to draw water over the gills.
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元となった例文
観察中、その幼魚は鰓蓋の動きで換気を行い、鰓に水を送り込むために鰓蓋をリズミカルに開閉していた。
