正常的链接是二硫键，可以被热度和酸度变化所破坏，导致蛋白质失去三维结构。

The normal kind of bonds - disulphide bonds - can be broken by changes in heat and acidity, causing proteins to lose their 3d structure.

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三个控制键用于控制舱内的灯光颜色和氛围，为用户量身定制的网状座椅能够最大地保证长时间坐立的舒适性。

The three dial control lets you control the color and ambiance of the light within and the custom made rubber mesh seat ensures optimum comfort during long sittings.

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提供了三种不同的组合键进行屏幕截图。

Three different key combinations can capture screens.

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And something that we'll see later on is that triple bonds, for example, are going to be stronger than a corresponding double bond or a corresponding single bond.

而我们以后还会看到三键，举例来说，应该更强，相较于相应的双键,或者相应的单键来说。

麻省理工公开课 - 化学原理课程节选

so you can see that there is going to be two sets in antibonding, three sets in bonding for a net of one, giving us the single bond.

因此你能看到,反键轨道上有两组，三组成键，得到一组净成键，所以成的是单键。

麻省理工公开课 - 固态化学导论课程节选

So let's take the case of acetylene where we have two carbon atoms that are going to be triple bonded to each other, each are bonded to a carbon and then to one hydrogen.

让我们来看一看乙炔的例子,我们有两个碳原子,成三键，每个碳和一个碳一个氢相连。

麻省理工公开课 - 化学原理课程节选