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收回（诺言等）；食言，背信
1、backed out───退出；收回；食言，违约
2、backed───v.支持；使后退（back的过去分词）；adj.有背的；有财力支持的
3、backed up───堵车了的；已备份的
4、backed off───后退；软化；减轻；卸下
5、backed beans───背豆
6、backed chicken───背脊鸡
7、out of sight out of mind───眼不见为净；眼不见心不烦.
8、out of───由于；缺乏；自……离开；用……（材料）；prep.由于; 用…（材料）; 自…离开; 得自（来源）; 缺乏
9、Black-Backed───黑背
1、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。
2、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。
3、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LianHeGuo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。
4、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。
5、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。
6、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。
7、However, given the number of times Saleh has backed out of resigning in recent weeks, some opposition leaders said they remained skeptical.───不过，鉴于次数萨利赫支持最近几周辞职了，一些FanDuiDangLingDaoRen表示，他们仍持怀疑态度。
8、As he backed out of the driveway, I thought of the checklist and asked, "You didn't drink water, did you? "───我们出门准备出发，他在倒车，而我在回想有没有什么遗漏，“你没喝水，对么？”
9、As I backed out of the river water, I wondered what my forebears would have though if they had had to put up with so many silly laws.───我从河水中退出去的时候想，假如祖先们必须忍受那么多愚蠢的法律，不知道他们做何感想。
1、She backed out of her engagement.
2、They backed out of the deal.
3、He has backed out of the contract.
4、He backed out of the drive.
5、Seeing him coming,she backed out of the hall.
6、They backed out of the deal the day before they were due to sign the contract.
7、He lost confidence and backed out of the deal at the last minute.
8、She backed out of the driveway.
9、Madonna backed out of the project after much wrangling.