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Experts have revealed whether six food staples and supplements really prevent colds and flu. 专家揭示了六种食物和补品是否真能预防感冒和流感。 While honey has long been praised for reducing the symptoms of colds, science reveals it does little more than soothe sore throats. 尽管蜂蜜一直被人们誉为可以缓解感冒症状，但科学家认为它仅能缓解喉咙痛。 | 
