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19世纪末的一天,在俄国一个海关检查站,海关检查人员正在认真检查每个顾客的护照、行李,一个个旅客都被顺利放行了。当检查到带着一
One day in the late 19th century, at a customs checkpoint in Russia, customs inspectors were carefully checking each customer's passport, baggage and passengers one by one. When checked to bring one