27. Without prejudice to the application of paragraph 12 of this article, a witness, expert or other person who, at the request of the requesting State Party, consents to give evidence in a proceeding or to assist in an investigation, prosecution or judicial proceeding in the territory of the requesting State Party shall not be prosecuted, detained, punished or subjected to any other restriction of his or her personal liberty in that territory in respect of acts, omissions or convictions prior to his or her departure from the territory of the requested State Party. Such safe conduct shall cease when the witness, expert or other person having had, for a period of fifteen consecutive days or for any period agreed upon by the States Parties from the date on which he or she has been officially informed that his or her presence is no longer required by the judicial authorities, an opportunity of leaving, has nevertheless remained voluntarily in the territory of the requesting State Party or, having left it, has returned of his or her own free will.
27. 在不影响本条第12款的适用的情况下，应请求缔约国请求而同意到请求缔约国就某项诉讼作证或为某项侦查、起诉或审判程序提供协助的证人、鉴定人或其他人员，不应因其离开被请求缔约国领土之前的作为、不作为或定罪而在请求缔约国领土内被起诉、羁押、处罚，或在人身自由方面受到任何其他限制。如该证人、鉴定人或其他人员已得到司法当局不再需要其到场的正式通知，在自通知之日起连续十五天内或在缔约国所商定的任何期限内，有机会离开但仍自愿留在请求缔约国境内，或在离境后又自愿返回，则此项安全保障即不再有效。