Guilt pangs are a waste of time.

内疚痛苦是浪费时间。

youdao

Toxic friendships are a waste of time.

不良的友谊就是浪费时间。

youdao

Think that mobile social apps are a waste of time and energy?

你认为使用手机社交软件是浪费时间和精力吗？

youdao

And I am not going to take the time to solve it because I think that is a waste of class time, but those are the three unknowns.

但我并不打算把解这几个方程,我觉得那会是浪费课堂时间，但那是三个未知式。

麻省理工公开课 - 固态化学导论课程节选

The science today shows, says Fisher, that virtually all stock-picking techniques are a waste of time.

FORBES: George Gilder Is On A Ken Fisher Kick

The police are a waste of time'.

BBC: Burgled farmer 'made threats to kill'

The projects that draw you away from that may or may not be a waste of time in general but, clearly, they are a waste of your time.

FORBES: Defend Your Sweet Spot