Officials said they believe a signal failure may have caused the crash, or collision.

官员们表示，他们认为可能是信号故导致了列车相撞。

Local media report accidents with dozens of injured due to malfunctioning traffic lights.

当地媒了交通信号灯故导致数十人伤的事故。

All eastbound trains have been cancelled due to faulty signals.

【bound】由于信号故，所有东行列车均已取消。

Yeah, the trains break down. The switching systems are old. Robert Shaw is robbing them right and left.

是的，列车时常发生故，信号切换系统老旧不堪，罗伯特·肖左右逢源地从中渔利。

So, while the horn is primarily a means  of communication, it is not the only way the aircraft can send a signal, to warn of  failure.

因此，虽然喇叭主要是一种通信方式，但它并不是飞机发出故警告信号的唯一方式。