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。
He had to make a quick change at Shanghai. 他不得不在上海匆忙换车。
He had to make a quick change at Crewe. 他得在克鲁迅速换车。
