你可能已经被要求签署一份正式的保密文件，有人想告诉你一个大秘密，但是至少在本世纪你不能再告诉其他人。
You've probably been asked to sign a formal NDA document — someone wants to tell you a big secret and you're not allowed to tell anyone, at least not during this century.
他说，伊拉克警方强迫当地旅馆的老板签署文件，保证他们不把房间出租给身上没有伊拉克正式签证的合法护照的伊朗人。
He says Iraqi police forced hotel owners to sign papers stating they would not rent rooms to Iranians who were not in possession of legal passports bearing an official Iraqi stamp.
国王签署了退位的正式文件。
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