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1. The patient showed no symptoms of the disease.
病人没有显示出这种疾病的症状。
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2. The researcher found that some animals were asymptomatic carriers of the virus.
研究人员发现一些动物是病毒的隐性携带者。
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3.The new drug is designed to treat diseases without showing any symptoms.
这种新药旨在治疗疾病，而不显示任何症状。