I wouldn't be an extra part.

我就不会是那个多余的部分。

youdao

I have an extra part. I must have omitted a step!

怎么会多出一个零件，我肯定漏掉了一个工序！

youdao

So I figure if the entire world was one big machine, I couldn't be an extra part.

所以我觉得，如果世界是个大机器，那我就不可能是多余的。我一定有存在的理由。

youdao

There's no extra part.

并无其他

耶鲁公开课 - 死亡课程节选

In a strong English department, where from September there will be just one full-time member of staff exclusively supporting students with special educational needs, they cannot afford an extra part-time teacher.

BBC: The supply teacher

The extra fancy part is that the notebook can be built with the "owner's choice of precious metals, leathers and real woods, " which sounds fun.

ENGADGET: Luvaglio million dollar gets "official," sort of

In fact, the apparent improvement in job numbers has been made up of one part extra hiring and two parts reduced firing.

FORBES: Zuckerman: The Great American Job Machine Is Breaking Down