We climb the rungs to reach higher up.

我们爬梯子以到达更高处。

" Two hundred and thirty rungs, and then" ?

" 二百三十只铁环之后呢？"

So, for me climbing a few more rungs on the ladder means more money and more security.

所以，对我来说，多爬几级就意味着更多的钱和安全感。

The rungs are pairs of four chemicals marked as A, G, C and T.

这些梯级由四种化学物质组成，标记为 A、G、C 和 T。

However, as some people climb, they reach down and help up those on the lower rungs.

然而，有些人在爬的过程中，会俯下身来帮助那些处于较低横档的人。

Normally, as people rise up the rungs, the more noticeable they are, the more likely they'll have coaching.

一般来说挺起胸膛的人更容易被关注，他们像是被训练过。

Can anyone move up the rungs of the social ladder?

任何人都可以在社会阶梯上更上一层楼吗？

I guess we could call it one of the " rungs" (rungs).

我想我们可以称它为“梯级”（rungs）之一。

A ladder has what are called " rungs."

梯子有所谓的“横档” 。

But like I said, there's five rungs, and all the first four are focused outwardly.

但就像我说的，有五个梯级，前四个梯级都集中在外。