经甲乙双方签字盖章后生效。的翻译：Entry into force when both parties sign. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Entered into force after both parties signed and sealed.

Entry into force when both parties sign.

Signs and seals after armor second grade both sides becomes effective.

Signed and sealed by both parties.

Entry into force when both parties sign.