1. phase in : 逐步采用；

2. out of phase : 异相地, 不协调地；

3. in phase : 同相地, 协调地；

4. phase out : 使逐步淘汰, 逐渐停止；

1. What phase of mathematics are you studying now?
    你在学习哪一方面的数学？

2. The disease was discovered in an early phase.
    病在早期已被发现。

3. They looked into the various phases of the problem.
    他们研究了问题的各个方面。

4. phase的解释

4. Luckily her disease was discovered in an early phase.
    幸运的是，她的病在早期就被发现了。

1. 月相：地球也在绕太阳公转,地球已经在轨道上移了少许,不能再和月球成一直线形成满月,月球要再行多一点点的距离,它们方能排成直线,我们方能见到满月,所以要见到同一个月相(Phase)要较多一点的时间,这个月相周期为29.531日,

1. 阶段；时期
    A phase is a particular stage in a process or in the gradual development of something.

phase的近义词

    e.g. This autumn, 6000 residents will participate in the first phase of the project...
           今年秋天，将有6000名居民参加该项目的第一阶段。
    e.g. The crisis is entering a crucial, critical phase...
           目前危机正进入决定性的关键阶段。

2. 把…分阶段
    If an action or change is phased over a period of time, it is done in stages.

phase的意思

    e.g. The redundancies will be phased over two years.
           裁员将在两年内分阶段进行。
    e.g. ...a phased withdrawal of American forces from the Philippines.
           美国从菲律宾的分阶段撤军

3. 不同步的（地）/同步的（地）；不协调的（地）/协调的（地）
    If two things are out of phase with each other, they are not working or happening together as they should. If two things are in phase, they are working or occurring together as they should.

    e.g. The Skills Programme is out of phase with the rest of the curriculum.
           技能课程与其他课程不协调。
    e.g. ...uncomfortable jet-lag symptoms of indigestion and out-of-phase sleeping and waking.
           消化不良、睡眠时间混乱等不舒服的飞行时差症状

相关词组：phase inphase out

1. (astronomy) the particular appearance of a body''s state of illumination (especially one of the recurring shapes of the part of Earth''s moon that is illuminated by the sun)

    e.g. the full phase of the moon

2. (physical chemistry) a distinct state of matter in a system
    matter that is identical in chemical composition and physical state and separated from other material by the phase boundary

    e.g. the reaction occurs in the liquid phase of the system

    Synonym: form

3. a particular point in the time of a cycle
    measured from some arbitrary zero and expressed as an angle

    Synonym: phase angle

4. any distinct time period in a sequence of events

    e.g. we are in a transitional stage in which many former ideas must be revised or rejected

    Synonym: stage

1. adjust so as to be in a synchronized condition

    e.g. he phased the intake with the output of the machine

2. arrange in phases or stages

    e.g. phase a withdrawal