Well, ethene based polymers form through a process called addition polymerization.

好吧，基于乙烯的聚合物是通过称为加聚的过程形成的。

And the simplest of those is ethene, also known as ethylene.

其中最简单的是乙烯， 也称为乙烯。

That ethene is sometimes called ethylene.

乙烯有时被称为乙烯。

Well the same thing goes for the ethene functional group, which is called a vinyl group.

同样的事情也适用于乙烯官能团， 它被称为乙烯基。

And, that a huge variety of polymers is based on the addition reaction of ethene based monomers, including Teflon.

而且，种类繁多的聚合物都是基于乙烯基单体的加成反应， 包括聚四氟乙烯。

The molecule itself is now a newly formed free radical, and it attack another nearby pi bond, joining with another molecule of ethene, forming another radical.

该分子本身现在是一个新形成的自由基，它攻击附近的另一个 pi 键， 与另一个乙烯分子结合， 形成另一个自由基。