Staph saprophyticus is catalase positive, so it makes an enzyme called catalase.

腐生葡萄球菌是过氢阳性的，它能产生一种称为过氢的。

Anaerobes, clostridia included, tend to lack the enzymes catalase or superoxide dismutase, so oxygen is actually toxic to them.

厌菌（包括梭菌）一般都缺乏过氢或超物歧；此对他们有毒害。

And it'll also make your cells fizz, because your cells also have catalase in them. Why?

还会让的细胞嘶嘶作响，为其中也含有过氢。为什么？

But, when peroxide comes at your cells from the outside, the catalase can't protect them.

但是，当过物从体外进入到的细胞内部时，过氢并无法起到保护作用。

That's mostly the peroxide reacting with an enzyme inside the bacteria, called catalase, forming water and oxygen gas.

主要是过物与细菌内部称作过氢的一种正在进行反应，形成水。

And it'll also make your cells fizz, because your cells also have catalase in them.

它也会让的细胞产生嘶嘶声，为的细胞中也含有过氢。

And it’ll also make your cells fizz, because your cells also have catalase in them.

它还会使您的细胞发出嘶嘶声，为您的细胞中也含有过氢。

But, when peroxide comes at your cells from the outside, the catalase can’t protect them.

但是，当过物从外部进入您的细胞时，过氢无法保护它们。

That’s mostly the peroxide reacting with an enzyme inside the bacteria, called catalase, forming water and oxygen gas.

这主要是过物与细菌内的一种反应，称为过氢，形成水。

We can use this to differentiate Staph saprophyticus from other gram positive cocci, like streptococci and enterococci, which are catalase negative.

我们可以利用这一特性来区分腐生葡萄球菌其他革兰氏阳性球菌，如链球菌肠球菌这一类过氢阴性的细菌。

So your cells are stocked with catalase to help turn that hydrogen peroxide into water and oxygen before it can do any harm.

所以的细胞中存有过氢，以帮助这些过氢转换成水，以免产生任何危害。

So, if catalase is present, like in staph saprophyticus, it makes hydrogen peroxide dissociate into water and oxygen, making the mixture foam.

如果存在过氢（如腐生葡萄球菌），它会使过氢分解成水，使混合物出现泡沫。

The cells in our hair bulb produce a little bit of hydrogen peroxide, which is a metabolic byproduct, and typically there's an enzyme called catalase that breaks this down to water and oxygen.

我们毛球中的细胞会产生一点过氢, 这是一种代谢副产物, 通常有一种叫做过氢的将其分解为水。

It's a non-spore forming, aerobic, facultative intracellular, catalase and oxidase positive bacteria that is best visualized with silver stain and grows well on BCYE agar with cysteine and iron into grey-white colonies with a cut-glass appearance.

它是非芽孢、需、兼性细胞内寄生、过氢阳性的细菌；最佳观察方式是银染色；在BCYE培养基供给半胱氨酸铁的情况下生长良好，可形成雕花玻璃样的灰白色菌落。

But as we age, there's declining levels of catalase, and this allows the build-up of hydrogen peroxide in the hair bulb, which damages and destroys the melanocytes, or the pigment producing cells, of our hair.

但随着年龄的增长，过氢的水平会下降，这会导致毛球中过氢的积聚，从而损害破坏头发的黑色素细胞或产生色素的细胞。

Legionella pneumophila is non-spore forming, aerobic, which means it needs oxygen to survive, facultative intracellular, which means it can survive both inside and outside the cell, and oxidase and catalase positive, which means it produces both of these enzymes.

嗜肺军团菌是一种非芽孢好细菌，需要才能存活，也是兼性细胞内寄生菌，即它在细胞内外均可生存，过氢阳性，即它可以产生这两种。

Alright, as a quick recap: Staphylococcus saprophyticus is round, gram-positive, facultative anaerobic, non-motile, non-spore forming, catalase positive, coagulase negative, urease positive, and novobiocin resistant bacterium, which is known to be part of the normal flora of the perineum.

得！来快速回顾一下：腐生葡萄球菌是一种圆形的、革兰染色阳性的、兼性厌细菌，无运动能力、不形成孢子，且过氢阳性、凝固阴性、脲阳性，对新生霉素耐药，它是已知的会阴正常菌群的一部分。