从前，有一个患了感冒的小男孩。

Once upon a time there was a little boy who had taken cold.

youdao

当我们患了感冒，我们可以观察和感觉到身体里的防卫系统开始运作。

When we get a cold, we can see and feel our body's defence systems activating.

youdao

要是家里有人患了感冒，每个人只要使用一些鼻喷雾剂之类的就不会有人得病，这样多棒啊。

It would be a great thing if somebody in the household gets a cold, everybody else takes a nasal spray and nobody else gets sick.

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