Penicillin is a highly effective broad-spectrum antibiotics, widely used in disease prevention and treatment of dairy cows.
青霉素是一种高效广谱抗生素类药物，广泛应用于预防及治疗奶牛疾病。
Penicillin is a highly effective broad-spectrum antibiotics, widely used in disease prevention and treatment of dairy cows.
青霉素是一种高效广谱抗生素类药物，广泛应用于预防及治疗奶牛疾病。
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