Influenza a, B and c, three separate strains of the virus, cause the flu.

三种不同的流感病毒流感A型、流感B型和流感C型都能引起流感。

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B: I feel very tired. I think I've got the 'flu.

B：我感觉非常疲劳。我想我可能是得了流感。

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B: I feel very tired. I think I've got the 'flu.

B：我感觉非常疲劳。我想我可能是得了流感。

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