The decision has been made and I have got to stand by it.

这个决定已经作出，我得坚持它。

《柯林斯英汉双解大词典》

Now that the decision has been made, we must try our best to carry it out.

既然已经作出了决定，我们就必须尽自己最大的努力去执行。

youdao

Now the decision has been made to leave, we need to find the best way, and I will do everything I can to help.

现在已决定离开，我们需要找到最佳的办法，我会尽我所能来提供帮助。

youdao

Now that the decision has been made to move forward with what the review called an "integral" part of U.S.defenses, the second ranking U.S.military officer, General James Cartwright, says the American military commands will spend some time figuring out how to use the various aspects of the system in their regions.

VOA: standard.2010.03.26

But that decision as to whether we should vaccinate the public has not been made.

VOA: standard.2009.04.30

The Obama administration says it is laying the groundwork to develop a vaccine against swine flu, although no decision has been made on large-scale production of such a vaccine.

VOA: standard.2009.05.03

"Now the decision has been made, and the Army is moving to execute that decision, " White said.

CNN: Rumsfeld dumps Crusader, defends decision

Once the decision has been made, the patient travels to Zurich where he or she is taken to a Dignitas flat.

BBC: Dignitas: Swiss suicide helpers

And, once the decision has been made, the wise leader reflects on the outcomes, acknowledges his or her mistakes, and adapts.

FORBES: Wise Leaders Guide Through Change