The lifeguard saw a black fin in the water and sounded the alarm to warn the children to get out of the water.

救生员看到水中有一只黑色的鱼鳍，并拉响警报警告孩子们从水中离开。

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Dietary myo-inositol deficiency in aquatic animals leads to symptoms such as a sharp decrease on the rate of growth, surface hyperemia, fin erosion, black body color, fatty liver disease.

饲料中肌醇缺乏导致水生动物生长不良、体表充血、鳍条糜烂、体色发黑、脂肪肝等症状。

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Dietary myo-inositol deficiency in aquatic animals leads to symptoms such as a sharp decrease on the rate of growth, surface hyperemia, fin erosion, black body color, fatty liver disease.

饲料中肌醇缺乏导致水生动物生长不良、体表充血、鳍条糜烂、体色发黑、脂肪肝等症状。

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