This keeps my family from coming down with frequent colds.

这个产物让我全家避免染上常见的伤风。

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More Frequent Colds or Flu: There's an inverse relationship between stress and immunity, so if you're under too much stress, you may be getting sick more often.

伤风感冒或流感更加频繁：压力和免疫力成反比，所以如果你承受的压力过大的话，你就会经常生病。

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But frequent hand washing and avoiding close contact with people who have colds can reduce the likelihood of catching one.

经常洗手并避免与感冒患者密切接触可减少感染的可能性。

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But the unit deepened scientific understanding of the condition, isolating coronaviruses and rhinoviruses, two of the most frequent causes of colds.

BBC: Magazine