A train must not pass a signal that is at danger.

火车切不可越过危险信号。

《新英汉大辞典》

There is plenty of suspicion, and unless people perceive the process to be free and fair, there is a danger this election will not pass off smoothly.

人们对此甚为怀疑，除非能看到选举过程是公平公正的，否则这次选举不可能顺利进行。

youdao

There are merits to this argument, but there is also a danger that Mr Kohn may be trying to pass the buck.

他的这一主张对缓解通货膨胀尽管有效，但也存在隐患。 而且，科恩似乎在有意推诿责任（忽略美元疲软的因素）。

youdao

The good news is that below a certain size, depending on what they're made of, some near-Earth asteroids don't pose any danger, burning up as they pass through the atmosphere.

BBC: Science & Environment

Having weathered the pressure, Munster mounted an assault of their own, but after also spurning a chance to kick for goal home prop John Yapp gathered a loose pass to help clear the danger.

BBC: Blues 20-12 Munster

Rather than move the puck to the boards and out of danger, Niskanen attempted a backhand clearing pass up the middle only to send it directly to Porter, who had little trouble flipping a wrist shot by Vokoun for Porter's first goal since March 12, 2012.

WSJ: Penguins' 15-game winning streak snapped by Sabres