one should take medicine upon cathing the disease.求翻译,重点在upon

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one should take medicine upon cathing the disease.求翻译,重点在upon
one should take medicine upon cathing the disease.求翻译,重点在upon

one should take medicine upon cathing the disease.求翻译,重点在upon
当患上这种疾病时应该马上服用药物.
upon 可翻做“当.的时候.”