detrain[,di:'trein]vi.1.■(军队等)下火车:The travelers detrained at the railway station.旅客们在火车站上下了车。vt.1.■使(军队等)下火车;从火车上卸载,把…卸下火车:The soldiers were detrained at night.士兵们在晚上秘密地下了火车。to detrain the mail从火车上卸下邮件