介绍:
back off 缓和，软化，减轻
The city council had to back off from its criticism of the utility department.
市议会必须减轻对公共事业部门的批评。
back out 退出（交易）；叫停
George backed out of the deal at the last minute.
George 在最后一刻退出交易.
back，put something on the back burner 暂时搁置
Paula was so busy that she had to put several projects on the back burner.
Paula 忙得必须把几个计划暂时搁置下来。
back at/to square one 回到起点；白费力气
It's really frustrating！After so much effort，I'm back at square one.
真泄气！费了那么多力气结果是白忙一场。
backseat driver 喜欢在后座知道人家如何开车的人；不在其位而谋其政
Please be quiet，I can't concentrate with so many backseat drivers.
bad 太棒了（讲坏话）
That outfit is bad. Where can I get one？
那套衣服棒透了，哪里可以买到？
bad blood 嫌隙； 不和；敌意
Ever since Howard borrowed 5，000 dollars from Mike and didn't pay him back，there's been blood between them.
自从Howard向Mike借了5000美元不还以后，他们之间就有了嫌隙。
bad-mouth 说坏话
Paul was always bad-mouthing his superiors until his boss threatened to fire him.
老板威胁要炒Paul鱿鱼，他才停止说老板坏话。
bad news 讨厌鬼
Marcy is nothing but bad news around here.
Marcy真是这一带的讨厌鬼。
bananas 疯子
The guy acts like he's bananas.
这家伙举动像个疯子。
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