Trains can be held up by frozen points,the icing of electice conductor rails,and fog,so warnings are provided by weathermen in time for precautionary measures to be taken.

 
  • 结冰的道岔、用作导电体的铁轨上出现的冰冻、雾等都会使火车停驶,于是气象员及时提供警报以供人们采取预防的措施。
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