求翻译：本合同经各方法定代表正式签署后，报审批机关批准之日起生效，并成为具有法律效力的正式文件，其有效期为三年。是什么意思？

Legal representative of the contract signed by the parties after the examination and approval authority the date of approval, and become legally binding official document that is valid for three years.

This contract was officially signed on behalf of methods to be reported after approval of the Examination and Approval Authority shall enter into force on the date, and become a formal legal document, its valid for 3 years.

This contract after all quarters member as of right official signature, reports to high authorities for their investigation and examination approves date of activation the institution authorization, and becomes the legally binding the official document, its term of validity is three years.

After the formal signing of this contract by the legal representative of the parties, with effect from the date of examination and approval organs for approval, and became the official documents with legal effect, shall be valid for three years.

Legal representative of the contract signed by the parties after the examination and approval authority the date of approval, and become legally binding official document that is valid for three years.