“绿茶的阻止效力可以持续一个星期，而红茶的效力只能维持一天。”奥凯洛博士说。他的研究成果发表在了《植物疗法研究》杂志上。
"The beneficial effects of green tea lasted for a week, but with black tea, the effect wore off after a day," said Dr Okello, whose study appears in the journal phytotherapy Research.
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