Oils produced by the skin form a protective barrier against infection and disease.皮肤分泌的油脂构成了一道预防感染与疾病的屏障。Good hand hygiene by hospital staff is vital in preventing infection.医务人员良好的手部卫生对于预防感染是至关重要的。Regular cleaning may help prevent infection.定期打扫卫生会有助于预防感染。