n.[C]

1. 阶段，时期[（+in/of）]
   Luckily her disease was discovered in an early phase.

   幸运的是，她的病在早期就被发现了。

2. 面，方面[（+of）]
   They looked into the various phases of the problem.

   他们研究了问题的各个方面。

3. 【天】【化】相
4. 【物】相，位相，周相

vt.

1. 使定相，使同步；使一致[（+to）]
2. 分阶段实行；逐步采用
   The U.S. army will complete the phased withdrawal in four months.

   美国军队将在四个月内完成分阶段撤军。

vi.

1. 分阶段（或逐步）前进

n.

1. a distinct period or stage in a process of change or development.
   ▸each of the aspects of the moon or a planet, according to the amount of its illumination.
2. Zoology  a genetic or seasonal variety of an animal's coloration.
3. Chemistry  a distinct and homogeneous form of matter separated by its surface from other forms.
4. Physics  the relationship in time between the cycles of an oscillating or repeating system and a fixed reference point or a different system.

v.

1. carry out in gradual stages.
   ▸ (phase something in/out) introduce something into (or withdraw something from) use in gradual stages.
2. apply phasing to (an electronic musical instrument).
3. Physics  adjust the phase of (something), especially so as to synchronize it with something else.