由于继发感染，分泌物常有难闻的臭味。
Due to secondary infection, secretions often have a bad smell.
从流行病学和经济学的角度来看，最大的收益是防止疾病的继发。
The biggest payoff epidemiologically and economically is in secondary prevention.
从流行病学和经济学的角度来看，最大的收益是防止疾病的继发。
The biggest payoff epidemiologically and economically is in secondary prevention.
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