Trillions and trillions of bacteria, viruses, fungi, and archaea consider your bowels their home.

上亿细菌、病毒、真菌、古菌将你的肠子作为它们的家。

While poops from sick individuals can contain disease-causing bacteria, viruses, and parasites

但病人的大便却携带致病的细菌、病毒和寄生虫，并会污染旁边物体。

Iovine said bacteria, viruses and parasites get into the water through human waste. But other things too.

艾奥瓦尼表示，细菌、病毒和寄生虫通过人类排泄物进入水中。但还有其他东西。

Normally the immune system protects the body by identifying and destroying foreign invaders like bacteria, viruses or toxins.

正常情况下，免疫系统可以通过识别并清除细菌、病毒、毒素等入侵物保护机体。

That's the ideal breeding ground for dangerous bacteria, viruses, and parasites.

那是危险细菌、病毒和寄生虫的理想滋生地。

See, you're constantly under attack by pathogens- single-celled bacteria, viruses and fungi.

你看， 你经常受到病原体的攻击— —单细胞细菌、 病毒和真菌。

Known as antigens, these can be parts of bacteria, viruses or other microbes.

这些被称为抗原， 可以是细菌、病毒或其他微生物的一部分。

These products are frequently used for disinfection and cleaning, as they can control or kill most types of bacteria, viruses, mildew, mold or algae.

这些产品经常用于消毒和清洁，因为它们可以控制或杀死大多数类型的细菌、病毒、霉菌、霉菌或藻类。

Our immune system is what protects us from the bacteria, viruses, fungi and toxins we encounter on a constant basis.

我们的免疫系统保护我们免受我们经常遇到的细菌、病毒、真菌和毒素的侵害。

A key part of your immune system is the cells that recognize and neutralize foreign bacteria, viruses, transplanted body parts or even your own damaged cells.

免疫系统的一个关键部分是识别和中和外来细菌、病毒、移植的身体部位甚至是自己的受损细胞。

The problem is that the molecules antibodies recognise and react to are the big ones, such as proteins, that are characteristic of bacteria, viruses and other infectious agents.

问题是抗体能识别和做出反应的分子是大分子，比如蛋白质，这是细菌，病毒和其他致病原的特征。

The human immune system has to fight off an endless variety of bacteria, viruses and parasites, and for each invader it needs a specific antibody.

人体免疫系统必须击退无穷无尽的细菌、病毒和寄生虫，对于每一种入侵者，它都需要一种特定的抗体。

Without it, you’d be exposed to billions of bacteria, viruses, and toxins that could make something as minor as a paper cut or a seasonal cold fatal.

没有它， 您就会接触到数十亿种细菌、病毒和毒素，这些细菌、病毒和毒素可能会导致小到剪纸或致命的季节性感冒。

The understanding that germs — primarily bacteria, viruses, fungi, and protozoa — are responsible for the spread of many diseases led to a massive acceleration in researchers identifying specific disease causes, preventers, and treatments.

细菌——主要是细菌、病毒、真菌和原生动物——是许多疾病传播的原因，这一认识大大加快了研究人员识别特定疾病的病因、预防方法和治疗方法的速度。

For example, your stomach has parietal cells that release hydrochloric acid — a substance more acidic than battery acid — which lays waste to most of the bacteria, viruses, and other stuff that could make you sick.

例如，你的胃有释放盐酸的顶叶细胞——一种比电池酸更酸的物质——它会产生大多数细菌、病毒和其他可能让你生病的东西。

Many researchers support the so-called " hygiene hypothesis" – the theory that the bacteria, viruses and worms that enter our bodies via dirt are necessary to develop a immune system capable of fighting back against these invaders.

许多研究人员支持所谓的“卫生假设理论”——通过灰尘进入我们身体的细菌和病毒是创建强壮的免疫系统， 抵抗入侵者所必需的。

The substances that the various bacteria, viruses and fungi produce may go directly into the bloodstream and infiltrate blood vessels, or they may stimulate the vagus nerve that connects the gut and the brain.

各种细菌、病毒和真菌产生的物质可能直接进入血液并渗透血管，也可能刺激连接肠道和大脑的迷走神经。

While poops from sick individuals can contain disease-causing bacteria, viruses, and parasites- and contaminate anything they touch - healthy poops are usually just water, harmless bacteria, undigested food, and some metabolic waste and dead cells.

虽然病人的粪便可能含有致病细菌、 病毒和寄生虫， 并污染他们接触的任何东西—但健康的粪便通常只是水、 无害细菌、 未消化的食物以及一些代谢废物和死细胞。

But secondly, the second you die, you know, all these bacteria, viruses and fungi that you've been keeping at bay by being alive and having an immune system, you know, now all of a sudden they start taking over.

但其次，在你死的那一刻，你知道，所有这些细菌、病毒和真菌，你一直通过活着和拥有免疫系统来抵御，你知道，现在它们突然开始接管。