derailment

n.

出轨；

复数：derailments

1. The trains are all to today because of a derailment farther down the line.
   今天的火车混乱不堪，因为前面有一列火车出轨了。
2. Police investigating the train derailment have not ruled out sabotage.
   警方调查火车出轨事件，没有排除人为破坏的可能。

Device for detecting derailment of trains
A Look at Derailment Today: North America and Europe.
Detection of derailment by determining the rate of fall
The derailment of behavior therapy: A tale of conceptual misdirection
Explanations of success and derailment in upper-level management positions
Analysis of Causes of Major Train Derailment and Their Effect on Accident Rates
Effect of Disabled Fastening Systems and Ballast on Vehicle Derailment
Experimental and numerical investigation on the derailment of a railway wheelset with solid axle
Could it happen here? Vaccine risk controversies and the specter of derailment
Acute health effects after exposure to chlorine gas released after a train derailment