In an article published in the journal Science, four scholars say racial categories need to be phased out.

调整语序、用词：在《科学》杂志上发表的一篇文章中，四位学者表示，种族的划分需要被逐步淘汰。

youdao

This is a complex and perverse system which needs to be phased out; but such a phase-out will need to be paid for.

这是一个必须被淘汰，既烦琐又低效的税务系统。但是更新这个系统需要银子啊。

youdao

Due to these inefficiencies, incandescent bulbs are starting to be phased out in many countries around the world.

由于白炽灯效率很低，他们在世界上许多国家已经开始被淘汰。

youdao

C. is where the President has allowed that to be phased out going forward.

WHITEHOUSE: Press Briefing

The IMO's rules require all single-hulled vessels to be phased out, but not until 2015.

ECONOMIST: Almighty mess, almighty row | The

Cheques are set to be phased out by 2018, under the Council's plans.

BBC: Cheque replacement views sought