She was a few rungs above him on the social ladder.

她的社会地位比他高了好几等。

The ladder has eight rungs.

这梯子有八级。

They may have rigid or flexible rungs.

他们可能刚性或弹性的阶层。

The rungs of a ladder.

把梯子放坡一点。

A long ladder is fine, but it must have rungs.

长梯子固然好，但必须有横梁。