Let us not waste time over them.

我们不用在他们身上浪费时间。

youdao

I went into medicine to care for patients, not to waste time bickering over budgets.

我从医是为了治病救人，不是为了预算争吵而浪费时间。

《柯林斯英汉双解大词典》

Don't waste any more time over it.

不要在这上面旷费时间了。

《新英汉大辞典》

If I did it all again I would try to speed up the development phase and waste less time agonizing over glitches and headaches.

FORBES: Hot Startups in Emerging Markets: iGuidU

For all those who bang on about stop smoking services being a waste of time...tell that to the thousands over 8 years who have added years to their lives and in some cases been around to survive their triple bypass operation!

BBC: Scrubbing up: Your comments

Three ferry companies have described their consultations with Dover Harbour Board over plans for privatisation as "a meaningless waste of time".

BBC: Dover port privatisation talks 'a waste of time'