求翻译：十二、本协议内容经甲、乙双方及乙方委托的中文翻译阅读确认，本协议一式二份，甲、乙双方各执壹份。自甲、乙双方签约之日起生效。是什么意思？

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12, the contents of the agreement between the parties by the hepatitis A, B and B parties entrusted the Chinese translation, read the agreement recognizes the type 2- A, B 1121 each party. Since hepatitis A, B sides enter into force from the date signed.

12th, this agreement content Chinese translation reading confirmation which after the armor, the second grade both sides and the second party entrusts, this agreement type two, the armor, the second grade both sides hold one respectively.Date of activation from armor, second grade both sides signing

12, the content of this agreement, as a, b and b both sides entrusted Chinese translations reading confirmed that this agreement in two copies, a and b each party holds one copy. Since a and b both sides with effect from the date of signing.