constrict

英 [kənˈstrɪkt]

美 [kənˈstrɪkt]

v.  (使)紧缩，缩窄; 限制; 限定; 抑制; 约束

过去分词：constricted　现在分词：constricting　过去式：constricted　第三人称单数：constricts　

TOEFLIELTSGRE

Collins.1 / BNC.19255 / COCA.15930

牛津词典

verb

• （使）紧缩，缩窄
  to become tighter or narrower; to make sth tighter or narrower
  1. Her throat constricted and she swallowed hard.
     她喉咙发紧，使劲地咽了一下唾沫。
  2. a drug that constricts the blood vessels.
     收缩血管的药
• 限制；限定；抑制；约束
  to limit or restrict what sb is able to do
  1. Film-makers of the time were constricted by the censors.
     那时的电影制作人受到了审查官的限制。
  2. constricting rules and regulations
     具有约束性的规章制度

柯林斯词典

• V-ERG (使)(身体部位，尤指喉咙)收紧，收缩
  If a part of your body, especially your throat,is constrictedor if itconstricts, something causes it to become narrower.
  1. Severe migraine can be treated with a drug which constricts the blood vessels...
     严重的偏头疼可以用一种收缩血管的药物进行治疗。
  2. My throat constricted, so that I had to concentrate on breathing.
     我的嗓子发紧，所以我不得不把注意力集中在呼吸上。
• VERB 限制;束缚;约束
  If somethingconstrictsyou, it limits your actions so that you cannot do what you want to do.
  1. She objects to the tests the Government's advisers have devised because they constrict her teaching style...
     她反对政府顾问设计的考试，因为这些考试限制了她的教学风格。
  2. Men and women alike have been constricted by traditional sexual roles.
     男性和女性同样受到传统性别角色的束缚。

英英释义

verb

• become tight or as if tight
  1. Her throat constricted
  Synonym:constringenarrow
• squeeze or press together
  1. she compressed her lips
  2. the spasm contracted the muscle
  Synonym:compresssqueezecompactcontractpress

双语例句

• Panic can constrict the blood vessels and impose an additional burden on the heart.
  恐慌会使血管收缩，增加心脏负担。
• Constrict a hollow organ or vessel so as to stop the flow of blood or air.
  压缩一个中空器官或导管使血液或气体停止流动。
• Capacitance vessels constrict, increasing the back flow of venous blood.
  容量血管收缩，静脉回流量增加。
• One such defense: A thermal regulator in the brain, after receiving messages from temperature sensors in the skin, automatically alerts blood vessels there to constrict.
  其中一种御寒机制是：大脑中有一个温度调节系统，在接收到皮肤中的温度传感器发来的信息后，温度调节系统会自动提醒皮肤血管收缩。
• For a pimple that has not yet resulted in a pus filled eruption on the skin, ice can be used to reduce swelling and encourage the oil glands to constrict and push out the excess oil and bacteria from the irritated glands.
  如果皮肤上的一个粉刺还没有变成脓包，可以用冰来减少肿胀和刺激油腺体收缩，将上火的腺体里的细菌和多余的油排出体外。
• Losing nitric oxide could, in theory, cause vessels to constrict and clots to form.
  理论上，丢失氧化一氮将导致血管收缩和血栓形成。
• To conserve blood that will be needed by muscles, skin vessels constrict while vessels of the muscles dilate.
  为了保存肌肉所需要的血液，皮肤血管收缩，而肌肉血管舒张。
• Poor posture can constrict or put pressure on organs, restricting blood flow to them and inhibiting their proper functioning.
  不良体态会使你的器官收缩或对它们施加压力，这就限制了血液流入和器官正常运作。
• Levels of endothelin-1, proteins that constrict blood vessels and raise blood pressure, decreased by 14%.
  内皮素-1的水平则降低了14%，该类蛋白质会使血管收缩、血压升高。
• The exact reason for the effect is unclear, but studies have shown that air pollution can constrict blood vessels, increase blood pressure and increase the risk for blood clots.
  这种影响的确切原因尚不清楚，但研究表明，空气污染可引起血管收缩、血压升高，并会增加血栓风险。