Sleeping better may help fight off illness.

良好的睡眠可能有助于抵御疾病。

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A good diet and fit body will help you to fight off illness and disease - and to recover more quickly if you do become sick.

良好的饮食习惯和合适的体重能帮助你击退疾病，也能在你患病后帮助尽快恢复身体。

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Also, not all germs are harmful; we need friendly bacteria that live on our skin to help fight off bad bugs, and bacteria in our mouth and gut help digest our food and prevent illness and disease.

此外，并非所有的细菌都对人体有害；我们的皮肤上需要有“友好”的细菌来帮助抵抗“坏”的细菌，口腔和肠胃里的细菌可以帮助我们消化食物，防止疾病。

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Also, not all germs are harmful; we need friendly bacteria that live on our skin to help fight off bad bugs, and bacteria in our mouth and gut help digest our food and prevent illness and disease.

此外，并非所有的细菌都对人体有害；我们的皮肤上需要有“友好”的细菌来帮助抵抗“坏”的细菌，口腔和肠胃里的细菌可以帮助我们消化食物，防止疾病。

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