最近几年，出血性败血病已成了上海地区池养鲤科鱼类的一种流行病。
Recently a few years, hemorrhagic septicemia has been become one of epidemic disease of the cultivated cyprinid fishes in Shanghai region.
最近几年，出血性败血病已成了上海地区池养鲤科鱼类的一种流行病。
Recently a few years, hemorrhagic septicemia has been become one of epidemic disease of the cultivated cyprinid fishes in Shanghai region.
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