醫(yī)學(xué)英語輕松學(xué) 第27期:免疫系統(tǒng)與疫苗

Today, we’re talking about vaccines and why they’re so important.

今天，我們要討論的話題是疫苗，以及注射疫苗的重要性。

Our bodies have an immune system that protects us from infections and diseases.

身體免疫系統(tǒng)可防止感染和疾病。

Basically, a vaccine helps get our immune system ready to fight off a certain illness.

基本上，疫苗可幫助免疫系統(tǒng)對抗特定疾病。

A vaccine is usually made of the germ that could make you sick, but the germ is weakened or killed.

通常，疫苗含有許多致病細(xì)菌，但這些細(xì)菌已無法致病或已經(jīng)死亡。

When a vaccine enters our body, the immune system thinks it’s the real germ and responds to it the same way it does to germs, it fights it.

當(dāng)疫苗進入體內(nèi)，免疫系統(tǒng)認(rèn)為它是細(xì)菌，并將以對抗細(xì)菌的方式對抗疫苗。

But, the vaccine is easier to fight than the illness you’re being vaccinated against, and it won’t make you sick.

然而，這種疫苗比對抗疾病來說更加容易，且不會致病。

Once the immune system figures out how to fight a germ and win, it remembers what works.

一旦免疫系統(tǒng)戰(zhàn)勝該疫苗，它將會依循原有記憶進行保護。

Should such an enemy enter your body again, your immune system is ready to fight it off and will move to attack before it has a chance to make you sick.

一旦敵人再次侵入身體，免疫系統(tǒng)將在致病之前消滅敵人。

Sometimes our immune systems need a refresher course, which is why we get booster doses of some vaccines.

免疫系統(tǒng)有時也需要提神，這就是為什么我們要注射加強針的原因。

Some germs are tricky and change over time, like flu viruses.

像流感等病毒隨時都在發(fā)生變化。

We need to get the flu vaccine every year so our bodies can be ready to take on the latest flu viruses!

我們每年都需注射流感疫苗，保證免疫系統(tǒng)可對抗最新流感病毒。

1.need to 需要

例句：You need to touch up the poem.

你需要給這首詩潤色一下。

2.immune system 免疫系統(tǒng)

例句：So if you take them away, the immune system runs wild, as it has nothing to work against.

所以如果你清除了他們，免疫系統(tǒng)運轉(zhuǎn)就會失控，因為它失去了與之抗衡的力量。

3.be ready to 為…做準(zhǔn)備

例句：So if you come, be ready to dance.

因此，如果你來到這兒，就準(zhǔn)備好起舞吧。

4.vaccinate against 給..接種疫苗

例句：The children were all vaccinated against smallpox.

所有兒童都種了牛痘以預(yù)防天花。