Train derailment is an important factor to influence train-running safety.
火车脱轨是影响火车运行安全的一个重要因素。
The trains are all to pot 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。
The trains are all to pot 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。
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