那兩組交通燈不同步因而發生了幾起事故。
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.
沿路前行直至有交通燈處。
Go down the road till you reach the traffic lights.
那兩組交通燈不同步。
The two sets of traffic lights were out of phase.
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