They acquire immunity naturally just like our bodies acquire immunity when we get a cold.

它们通过自然途径获得了免疫，就像我们在感冒之后可以获得免疫一样。

He's had so many colds and sore throats recently.

他最近常常感冒，并且喉咙痛。

You seem to have caught the flu.

你好像得了流行性感冒。

She infected the whole class with her influenza.

她将流行感冒传染给全班。

He went to see the doctor at the onset of a cold.

他开始感冒时便去看医生了。

You have a cold. You should take some medicine.

你感冒了。你应该吃些药。

You are liable to catch a cold if you go out without an overcoat.

如果你外出时没穿大衣，就容易感冒。

What do you do when you catch a cold?

你感冒了的时候会怎么办？

If you sleep between damp sheets, you will probably catch cold.

如果你睡在潮湿的被单里，就可能会感冒。

I'm not feeling too well. I've caught a cold.

我觉得不太舒服，我感冒了。

It's just a cold. - Do you have a fever?

只是单纯的感冒 -有发烧吗？

Cover yourself with a quilt or you'll catch a cold.

盖上被子，不然你会感冒。

I've got a bit of a cold, sorry.

我有些感冒，不好意思。

Penelope, have you ever had a cold?

佩内洛普，你感冒过吗？

Still? It's been over a week now, hasn't it?

还感冒？已经一个多星期啦，不是吗？

So, if one person is sick, more people are likely to get sick.

所以，一人感冒其他人就可能被传染上。

That was not like having a mild cold, that was serious.

那和轻微的感冒可不一样，咳得很厉害。

I got a cold because somebody gave it to me.

我之所以感冒是因为有人传染给我了。

Madam Pomfrey, the nurse, was kept busy by a sudden spate of colds among the staff and students.

工和生中间突然流行起了感冒，弄得护士长庞弗雷夫人手忙脚乱。

Blowing my nose because I have a little cold right now, so be careful.

擤鼻涕，因为我现在有点感冒，所以你心点。