I knew every ounce would weigh on me like a little anchor, so I was determined not to include a single item that was unnecessary or superfluous.

我意识到每盎司的重量都会成为一个小小的船锚压迫着我，所以我决定不带任何一样不必要的或多余的东西。

youdao

But it's superfluous, really-which is why calling someone a "fifth wheel" is a way of calling them unnecessary, basically a tagalong.

但它是多余的，真的- - -这就是为什么将一个人称作“第五轮”是指他们无用，根本是个跟屁虫。

youdao

I knew every ounce would weigh on me like a little anchor, so I was determined not to include a single item that was unnecessary or 18 superfluous.

我知道每一盎司东西都会像个小锚一般给我带来沉重负担，所以我决定只要是不必要或多余的东西，就一件也不带。

youdao