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E2m，作为本作品的著作权人，特声明将本作品发表至公有领域。
在部分司法管辖区，前述声明可能全部或部分违反法律规定，或著作权人无法放弃全部或部分著作权；有鉴于此，本作品著作权人声明：
本作品著作权人，特此无条件授予任何人以任何目的使用本作品的权利，除非该等许可是法律所必需的，或该等使用是法律所禁止的。

根据《中华人民共和国著作权法》，著作人身权无法被放弃；若需要更严谨的公有领域声明，建议使用《CC0 1.0》协议。

This work is in the public domain in Brazil for one of the following reasons:

• It is a work published or commissioned by a Brazilian government (federal, state, or municipal) prior to 1983. (Law 3071/1916, art. 662; Law 5988/1973, art. 46; Law 9610/1998, art. 115)
• It is the text of a treaty, convention, law, decree, regulation, judicial decision, or other official enactment. (Law 9610/1998, art. 8)
• It is a work whose authors' rights belong to the Brazilian government (federal, state, or municipal), for which the economic rights shall be protected for a period of 70 years from the first of January of the year following that of their disclosure or that of the author's demise, whichever is later. ([1])