中英释义：
双语例句
我下楼后，我的老伙伴--那个铁路警察从诊室里走了出来，并随手把门紧紧地关上。
As I descended, my old ally, the guard, came out of the room and closed the door tightly behind him.
重点词汇
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铁路
railway; railroad; rail; track; line; iron road
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警察
police; cop; police officer; policeman; policewoman; constable; officer; constabulary; copper; bobby; Garda; filth; rozzer; police force; gendarme