retraction

英 [rɪˈtrækʃn]

美 [rɪˈtrækʃn]

n.  撤销; 收回; 拉回

复数：retractions　

医学

BNC.23414 / COCA.21897

牛津词典

noun

• 撤销；收回
  a statement saying that sth you previously said or wrote is not true
  1. He demanded a full retraction of the allegations against him.
     他要求完全收回针对他的言论。
• 收回；拉回
  the act of pulling sth back (= of retracting it)
  1. the retraction of a cat's claws
     猫爪子的回缩

柯林斯词典

• VERB 收回，撤回(所说的话或写的东西)
  If youretractsomething that you have said or written, you say that you did not mean it.
  1. Mr Smith hurriedly sought to retract the statement, but it had just been broadcast on national radio...
     史密斯先生想赶快收回这项声明，但它刚刚已经在国家电台播出了。
  2. He's hoping that if he makes me feel guilty, I'll retract.
     他指望着如果他能让我感到内疚，我就会收回所说的话。
• V-ERG （使）缩回;（使）缩入;（使）收起
  When a part of a machine or a part of a person's bodyretractsoris retracted, it moves inwards or becomes shorter.
  1. Torn muscles retract, and lose strength, structure, and tightness.
     撕裂的肌肉会收缩，丧失原来的力量、结构和紧实度。
  2. ...when the aircraft's wheels were retracted.
     当飞机的轮子收起来的时候

英英释义

noun

• the act of pulling or holding or drawing a part back
  1. the retraction of the landing gear
  2. retraction of the foreskin
• a disavowal or taking back of a previous assertion
  Synonym:abjurationrecantation

双语例句

• Objective To compare the effect of gingival retraction paste and gingival retraction cord in the immediate restoration of teeth fracture.
  目的比较排龈膏与排龈线在劈裂牙即刻固定修复中的排龈效果。
• Clinical study of implantation of preserved sclera combined with Z-PLASTY in traumatic eyelid retraction Keratoepithelioplasty for old ocular burns
  异体巩膜植入联合Z形皮瓣治疗陈旧性外伤性下睑退缩角膜上皮移植术治疗陈旧性眼部烧伤的临床应用
• Objective The PFM prosthesis by using gingival retraction has been observed something about its effect and the condition of gingival tissues'injury.
  目的在烤瓷熔附金属冠桥修复的不同时期应用排龈技术，观察烤瓷修复的效果及对牙龈组织的损伤情况。
• His retraction was published in several newspapers.
  他收回原话的声明登在好几家报纸上。
• The risorius and the buccinator muscles assist in the retraction of the lips, as well as support entrapment of air within the oral cavity.
  笑肌和颊肌帮助唇的收缩，也支撑了整个口腔的气体流通。
• Application of Gingival Retraction Cord and Gingival Retraction Paste in Fixed Prosthesis Restoration of Split Tooth
  排龈线与排龈膏在劈裂牙固定修复中的应用研究
• The newspaper printed a retraction for their previous error.
  报纸上登出了对以前错误的撤回声明。
• The dehydration of the body after death can cause retraction of the skin around hair and nails, giving the illusion that they have grown.
  在人死后，身体的脱水可引起头发和指甲周围的皮肤收缩，造成指甲生长的错觉。
• Damage to the neuromuscular junction following prolonged retraction can also lead to muscle denervation.
  持续长时间牵拉造成神经肌肉接头处的损害亦导致肌肉去神经支配。
• The retraction loss and the slide of the steel bar bundle are reduced, and anchoring reliability is enhanced.
  并能减少钢筋束回缩损失及滑束现象，增加锚固的可靠性。