He used his special identity of FBI to ask one trainman to leave one compartment for them.

他利用自己是联邦特工的特殊身份，让一名列车员给他们腾出来一间车厢。

Objective: To study the sleep state and relative factors of trainman on Qinghai-Tibet railway passenger train and to protect trainmans health by presenting reasonable measures.

目的调查高原铁路旅客列车乘务人员睡眠状况，并对其相关因素进行分析，以提出合理措施保障乘务员身体健康。