You could be suffering from a serious illness that needs a doctor's care.

你可能患有严重的疾病，需要医生的治疗。

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Although he was not suffering from a serious illness, it was not unexpected.

尽管他没犯什么大病，但他的离去也是在意料之中的。

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Although he was not suffering from a serious illness, it was not unexpected.

尽管他没犯什么大病，但他的离去也是在意料之中的。

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