to phase out sth or to phase sth out
1.+ system, equipment, method逐步淘汰；逐步废除
This type of weapon is now being phased out.这类武器正被逐步淘汰。
They said the present system of military conscription should be phased out.他们说现有的军队征兵制度应当逐步废除。
2.+ job逐步削减；逐步取代
16,000 jobs are being phased out.16,000个工作岗位正被逐步裁减。
They phased out my job in favour of a computer.他们逐步用计算机取代了我的工作。