reversal

英 [rɪˈvɜːsl]

美 [rɪˈvɜːrsl]

n.  颠倒; 彻底转变; 反转; 倒置; 倒退; 逆转; 退步; 转胜为败; (位置或功能的)转换，交换

复数：reversals　

TEM8医学

BNC.7892 / COCA.7227

牛津词典

noun

• 颠倒；彻底转变；反转；倒置
  a change of sth so that it is the opposite of what it was
  1. a complete/dramatic/sudden reversal of policy
     政策的全面 / 剧烈 / 突然转变
  2. the reversal of a decision
     决定的撤销
  3. 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
  1. the team's recent reversal
     球队最近的失败
  2. 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
  1. 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。

柯林斯词典

• N-COUNT （过程、政策或趋势的）反转，倒转，逆转
  Areversal ofa process, policy, or trend is a complete change in it.
  1. 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。
  2. 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。
• N-COUNT （角色的）交换，互换
  When there is a rolereversalor areversal ofroles, two people or groups exchange their positions or functions.
  1. 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。
• N-COUNT (通常涉及金钱损失的)失败，逆境，挫折
  Areversalis a failure, usually involving the loss of money.
  1. 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。

英英释义

noun

• a major change in attitude or principle or point of view
  1. an about-face on foreign policy
  Synonym:about-facevolte-facepolicy change
• a change from one state to the opposite state
  1. there was a reversal of autonomic function
• the act of reversing the order or place of
  Synonym:transposition
• turning in the opposite direction
  Synonym:reversionreverseturnaboutturnaround
• a judgment by a higher court that the judgment of a lower court was incorrect and should be set aside
• a decision to reverse an earlier decision
  Synonym:change of mindflip-flopturnaboutturnaround
• turning in an opposite direction or position
  1. the reversal of the image in the lens
  Synonym:turn around
• an unfortunate happening that hinders or impedes
  Synonym:reversesetbackblowblack eye

双语例句

• 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。
• 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。
• Instead we witnessed a dramatic reversal in the signs and symptoms of ageing.
  相反，我们目睹了戏剧性的逆转老化的体征和症状。
• The disappearance of the Earth's magnetic field and with no doubt reversal between biology major contradiction.
  地球磁场的消失和逆转无疑与生物学之间有大矛盾。
• Reversal effect of Tanshinone Microemulsion is more effective than that of Tanshinone and Microemulsion.
  微乳丹参酮对多药耐药逆转作用较丹参酮和微乳逆转效果更显著。
• 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。
• It's most direct and tragic result was the reversal of Kennedy's decision to withdraw from Vietnam.
  它最直接、也是最具悲剧性的后果，就是改变了肯尼迪从越南撤军的决定。
• KEY WORDS: time and space translation symmetry; time reversal symmetry; conservation law; symmetry breaking.
  关键词：时间和空间平移对称性；时间反演对称性；守恒律；对称破缺。
• Time reversal invariance is a very useful symmetry in subatomic physics.
  时间反演不变性在亚原子物理中仍然是一种很有用的对称性。
• 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。