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Sturgeons and gars are ganoid.鲟鱼和长嘴鱼都是硬鳞鱼.Ganoid fishes swarmed during the earlier geological periods.硬鳞鱼在更早的地质时期数量巨大....

ganoid的音标：ganoid的英式发音音标为：['gænɔɪd]ganoid的美式发音音标为：['gænɔɪd]...