The deal fell apart when we failed to agree on a price.

我们在价格上未能达成一致意见，生意吹了。

《牛津词典》

So we both agree there's a problem?

那么我们两个人都同意是有一个问题啦？

《柯林斯英汉双解大词典》

He would not agree to a cessation of hostilities.

他不会同意敌对状态的停止。

《柯林斯英汉双解大词典》

He said he and U.S.President Barack Obama agree that whatever new government emerges will have to make a new contract with the international community and its neighbors to build its army, take tough action on corruption, create a more inclusive political process, reach out to moderate elements of the insurgency and stronger control of local affairs.

VOA: standard.2009.10.14

It's illegal, so they can't sign that as a contract, but they they can just agree to do it.

因为是违法的,合同也就无效了,不过他们可以私下达成默契

耶鲁公开课 - 博弈论课程节选

But I do agree with spending a little bit of extra money for something that's a higher quality.

但是，我同意多花一点钱去买一些高质量的东西，

不需要名牌 - SpeakingMax英语口语达人

Meanwhile, the leaders of the 17 eurozone countries will hold an emergency summit next week in a bid to agree a deal on a second bail-out for Greece, the EU president announced Friday night.

BBC: Eight banks fail EU stress test with 16 in danger zone

Even the new government led by President Nicos Anastasiades, elected last month with a mandate to agree a bailout, loudly opposed winding up the bust banks, hoping the euro zone would gift Cyprus the money rather than impose losses on depositors.

WSJ: Now We Are Seeing Politics in the Raw

It follows that all incumbents of both parties in Congress may be disadvantaged in 2012 by a failure to agree on a budget.

FORBES: GOP Voters Itching for Budget Fight