动词 phase:

1. arrange in phases or stages

2. adjust so as to be in a synchronized condition

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1. The two sets of traffic lights were out of phase (ie did not show the same change at the same time) and several accidents occurred.
   那两组交通灯不同步因而发生了几起事故。
2. The child is going through a difficult phase.
   那孩子正经历困难的阶段。
3. The two sets of traffic lights were out of phase.
   那两组交通灯不同步。