PHRASAL VERB 放弃(主张、要求、承诺等);打退堂鼓 If you back down, you withdraw a claim, demand, or commitment that you made earlier, because other people are strongly opposed to it.
The United States had no intention of backing down in its bitter row over farm subsidies... 美国无意就激烈争吵的农产品补贴问题作出让步。
It's too late to back down now... 现在打退堂鼓已经太晚了。
He had to back down on plans to backdate the tax changes. 他不得不放弃追溯税收调整的计划。