As time goes on, gills mucus began to secret abnormally; epithelial cells, pathogens, and soon the fish will die due to breathing difficulties.

随着时间的推移，鳃部粘液开始异常分泌，病原体侵袭上皮细胞，不久鱼就会因呼吸困难而死亡。

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As time goes on, gills mucus began to secret abnormally; epithelial cells, pathogens, and soon the fish will die due to breathing difficulties.

随着时间的推移，鳃部粘液开始异常分泌，病原体侵袭上皮细胞，不久鱼就会因呼吸困难而死亡。

youdao