All the other naming rules apply to alkenes and alkynes too.

所有其他的命名规则也适用于烯烃炔烃。

If they've got a double bond, we call them alkenes, and those with triple bonds are alkynes.

如果它含有双，它为烯烃，而含有三的则为炔烃。

Thus, no isomers with alkynes. Phew. OK I'm done describing for the moment.

因此，炔烃没有异构体。松了口气。好吧，暂时先述到这儿。

They can be alkanes or alkenes, sometimes, even rarely, alkynes.

它可以是烷烃或烯烃，有时甚至是罕见的炔烃。

The triple bonds in alkynes, meanwhile, are composed of 1 sigma bond and 2 pi bonds for a total of 3 bonds.

炔烃中的三由1σ2π组成，总共3。

Alkenes can be made into alkanes and alkynes can become either alkenes or alkanes depending on how many atoms are added.

烯烃可以转化为烷烃，而炔烃则可以根据添加的原子数量变成烯烃或烷烃。

You also learned a little bit about cis-trans isomerism and learned a few important reactions of alkenes and alkynes such as hydrogenation, halogenation, and polymerization.

你还了解了一点关于顺反异构体的知识，并学习了一些烯烃炔烃的重要反应，如氢化、卤化聚合。

So three words representing three different groups of organic compounds: alkanes for all single bonds, alkenes if they contain double bonds, and alkynes if they contain one or more triple bonds.

所以三词代表三种不同的有机化合物组：烷烃表示全单，烯烃表示含有双，炔烃表示含有一或多三。

That may not sound like a big deal at first, but alkenes and alkynes don't have that kind of freedom, and that simple fact has a huge affect on their properties.

这乍一听可能不算什么大不了的事，但烯烃炔烃就没有这种自由度， 这简单的事实对其性质产生了巨大影响。

If you paid attention, you learned that hydrocarbons with double bonds are called alkenes and those with triple bonds are called alkynes and that the naming rules are the same as for alkanes.

如果你注意听了，你应该知道带有双的碳氢化合物为烯烃， 带有三的为炔烃， 而且它的命名规则与烷烃相同。