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1.Demeclocycline is an effective antibiotic that can treat many types of bacterial infections.
大环内酯是一种有效的抗生素，可以治疗许多类型的细菌感染。
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2.The patient was given a dose of Demeclocycline to help fight the infection.
患者被给予大环内酯的剂量，以帮助抵抗感染。
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3. Due to its broad-spectrum antibacterial activity, Demeclocycline is often used in combination with other antibiotics.
由于其广谱抗菌活性，大环内酯常与其他抗生素一起使用。