reversalnoun
颠倒；彻底转变；反转；倒置
a change of sth so that it is the opposite of what it was
a complete/dramatic/sudden reversal of policy
政策的全面 / 剧烈 / 突然转变
the reversal of a decision
决定的撤销
The government suffered a total reversal of fortune(s) last week.
上星期，政府的命运发生逆转。
倒退；逆转；退步；转胜为败
a change from being successful to having problems or being defeated
the team's recent reversal
球队最近的失败
The company's financial problems were only a temporary reversal.
公司的金融问题只是暂时的挫折。
（位置或功能的）转换，交换
an exchange of positions or functions between two or more people
It's a complete role reversal/reversal of roles (= for example when a husband cares for the house and children while the wife works) .
这是一种彻底的角色转换。
reversal
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1
N-COUNT （过程、政策或趋势的）反转，倒转，逆转
A reversal of a process, policy, or trend is a complete change in it.The Financial Times says the move represents a complete reversal of previous US policy...
《金融时报》说此举一反美国以往的政策。
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2
N-COUNT （角色的）交换，互换
When there is a role reversal or a reversal of roles, two people or groups exchange their positions or functions.When children end up taking care of their parents, it is a strange role reversal indeed.
当孩子们最终要照顾父母时，这的确是一种奇妙的角色互换。
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3
N-COUNT (通常涉及金钱损失的)失败，逆境，挫折
A reversal is a failure, usually involving the loss of money.They teach managers to accept reversals as a fact of business life.
他们教给管理人员要将挫折视为生意上的平常事。
noun
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1
- a major change in attitude or principle or point of view
- an about-face on foreign policy
- Synonym: about-face volte-face policy change
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2
- a change from one state to the opposite state
- there was a reversal of autonomic function
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3
- the act of reversing the order or place of
- Synonym: transposition
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4
- turning in the opposite direction
- Synonym: reversion reverse turnabout turnaround
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5
- a judgment by a higher court that the judgment of a lower court was incorrect and should be set aside
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6
- a decision to reverse an earlier decision
- Synonym: change of mind flip-flop turnabout turnaround
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7
- turning in an opposite direction or position
- the reversal of the image in the lens
- Synonym: turn around
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8
- an unfortunate happening that hinders or impedes;something that is thwarting or frustrating
- Synonym: reverse setback blow black eye
数据来源：WordNet
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The most recent reversal was about 700,000 years ago .
最近的一次倒转发生在大约70万年前。
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The last geomagnetic reversal for Earth was about 780,000 years ago .
地球上最后一次地磁倒转大约是78万年前。
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The company 's financial problems were only a temporary reversal .
公司的金融问题只是暂时的挫折。
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The government suffered a total reversal of fortune last week .
上星期，政府的命运发生逆转。
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In many marriages there has been a complete role reversal with the man staying at home and the woman going out to work .
许多夫妻彻底交换了角色，男人待在家里而女人出外工作。
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The Financial Times says the move represents a complete reversal of previous US policy
《金融时报》说此举一反美国以往的政策。
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They teach managers to accept reversals as a fact of business life .
他们教给管理人员要将挫折视为生意上的平常事。
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When children end up taking care of their parents , it is a strange role reversal indeed .
当孩子们最终要照顾父母时，这的确是一种奇妙的角色互换。
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What he had in mind amounted to nothing less than a total reversal of the traditional role of the executive
他头脑中所想的简直就是对管理人员传统角色的彻底颠覆。
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The complete reversal of this policy was unheralded .
事先没有听到一点儿风声要彻底推翻这项政策。
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This marked a 7 % increase on the previous year and the reversal of a steady five-year downward trend .
这标志着在前一年基础上有了7%的增长，扭转了5年来持续下降的趋势。
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That would be a reversal of the order of host and guest .
这样做就主客颠倒了。
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Your way of doing things at the moment seems to be a reversal of the order of host and guest .
你现在的作法似乎是喧宾夺主。
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Is it a market reversal or a bear market rally ?
目前股市是反转，还是反弹？
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In contrast , the recent surge in world grain prices is trend-driven , making it unlikely to reverse without a reversal in the trends themselves .
相比之下，最近的世界粮食价格上涨是由趋势造成的，除非趋势本身得以逆转，否则这种上涨是不可逆的。
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She confusedly realised this reversal of her attitudes , but could not make out what it portended .
她糊里糊涂的意识到自己这种相反的态度，但是不知道它会带来什么
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The cooks , seamstresses and other small investors are stunningly vulnerable to reversals .
那些厨师、裁缝及其他的小投资者非常容易受到股市逆转的影响。
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The Empirical Research on the Teaching Method of Role Reversal in Marketing
市场营销学角色互换教学法的实证分析
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Underwater Sensor Network Physical Layer Design Based on Time Reversal
适用于固定节点的水下传感器网络物理层设计
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Time reversal principle and its application to passive communication were introduced .
分析了时反法的理论基础，并对其用于浅海被动通信进行了仿真研究。
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Active Detection to Underwater Target Based on Time Reversal Technique
基于时反处理法的水下目标探测研究
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Effect of Polarity Reversal of Electric Field on Soil Microbial Community
土壤电动修复中电极切换对土壤微生物群落的影响
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First order design theory and applications of reversal parabolic gradient-index element
逆抛物型梯度折射率元件的一阶设计与应用
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Imaging algorithm by time reversal mirror s in random media
一种随机媒质时间反转成像算法
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But is this role reversal so new ?
但这种角色转换是新概念吗？
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The head and shoulder pattern is a reliable market reversal pattern .
头肩顶形态是一个可靠的市场反转形态。
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The reversal process resulted in the endogenous hormone balance change .
逆转过程是内源激素平衡被改变的结果。
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Finally , give out the multi-level reversal index strategy .
最后，给出了倒排索引的分级索引方案。
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Method for determining the speed of colour reversal camera films
GB/T9863-1988彩色反转照相胶片感光度测定方法
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Study of self-focusing in underwater waveguide by time reversal method
用时间反转法在水下波导介质中实现自适应聚焦的研究