Green tea catechin and theaflavin, which are both present in black tea, have a strong effect on the flu virus.

绿茶儿茶酚，跟红茶里含有的一样，都对流行性病毒有很强的影响。

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Green tea catechin and theaflavin, which are both present in black tea, have a strong effect on the flu virus.

绿茶儿茶酚，跟红茶里含有的一样，都对流行性病毒有很强的影响。

youdao