Correct or improve the translation of the following Chinese sentences.原文：于生效之日起，此协议有效期为三年。
译文：This agreement will become effective as of the effective date and will remain in effect for three years.改译：
Correct or improve the translation of the following Chinese sentences.原文：于生效之日起，此协议有效期为三年。
译文：This agreement will become effective as of the effective date and will remain in effect for three years.改译：
THIS AGREEMENT SHALL BECOME EFFECTIVE AS OF THE EFFECTIVE DATE AND SHALL REMAIN IN EFFECT FOR THREE YEARS.
