退出；收回；食言，违约

blacked out───v.中断，停止；熄灭灯火；晕倒，昏厥

packed out───完全挤满了人的(房间等)

blanked out───作废；取消

blocked out───封闭；概略画出

acted out───把…表演出来；把…付诸行动

asked out───邀请外出；（美）退休；（美）辞职

back out───退出；收回；食言，违约

backed off───后退；软化；减轻；卸下

backed up───堵车了的；已备份的

He lost confidence and backed out of the deal at the last minute.───他失去了信心，在最后一刻退出了协议。

The Hungarians backed out of the project in 1989 on environmental grounds.───匈牙利人在1989年以环境问题为由退出了该项目。

When I backed out of the 100 metres, an older kid tried to browbeat me into it.───当我退出100米赛的时候，一个年龄大的孩子试图逼迫我参赛。

We were all ready to sign the contracts when one of the parties to the agreement backed out.───我们都已经准备好要再合约书上签名了，另一方去临时退缩了。

But China backed out of talks toward that kind of agreement at the U. N. -led climate gathering two years ago in Copenhagen.───但在两年前以联合国为首的哥本哈根气候大会上，中国退出了意在达成约束性减排承诺的谈判。

Speculation also heated up earlier this week after the company backed out of a Barclays technology conference.───由于Compellent缺席巴克莱技术会议，本周稍早相关的并购猜测升温。

"[Khadafy] committed crimes against humanity. I didn't want to get mixed up with him or his organization, so I backed out, " he said.───卡扎菲犯了反人类罪，我不想和他或者他的组织扯上瓜葛，所以我不再支持他。

I just backed out of that, you know, and I just kind of kept the fists from flying.───我不参与，让学生们讨论去，而我要做的基本上就是多做手势。

Under the terms of the merger agreement, HP might have to pay Compaq as much as $675m if it backed out.───依据合并协议条款，如果惠普公司打退堂鼓的话，它就得支付康柏公司高达6.75亿美元的补偿。

He has backed out of the contract.

He backed out of the drive.

They backed out of the deal.

Madonna backed out of the project after much wrangling.

Seeing him coming,she backed out of the hall.

They backed out of the deal the day before they were due to sign the contract.

He backed out arrogantly and without apology.

She backed out of the driveway.

She backed out of her engagement.