tighten

verb

1. （使）变紧，更加牢固
   to become or make sth become tight or tighter
   1. The rope holding the boat suddenly tightened and broke.
      系船的绳子突然绷断了。
   2. His mouth tightened into a thin line.
      他的嘴抿成了一道细缝。
   3. to tighten a lid/screw/rope/knot
      拧紧盖子 / 螺钉；绷紧绳子；打紧结
   4. The nuts weren't properly tightened and the wheel came off.
      螺母没拧紧，轮子脱落了。
   5. She tightened her grip on his arm.
      她抓他的手臂抓得更紧了。
2. 使更加严格；加强
   to make sth become stricter
   1. to tighten security
      加强安全措施

1. V-ERG 抓紧;攥紧
   If you tighten your grip on something, or if your grip tightens, you hold the thing more firmly or securely.
   1. Luke answered by tightening his grip on her shoulder...
      卢克的回应就是把她的肩头抓得更紧了。
   2. Her arms tightened about his neck in gratitude...
      她充满感激，把他的脖子搂得更紧了。
   3. Stefano's grip tightened and his tone became colder.
      斯蒂芬诺的手抓得更紧了，语气也更冷了。
2. V-ERG 绷紧，拉紧(绳、链)
   If you tighten a rope or chain, or if it tightens, it is stretched or pulled hard until it is straight.
   1. The anchorman flung his whole weight back, tightening the rope...
      那个压阵队员使尽了全身力气往后拽，把绳子拉得紧紧的。
   2. The cables tightened and he was lifted gradually from the deck.
      缆绳绷紧了，他被慢慢地吊离了甲板。
3. V-ERG (对…)严加控制;(使)加强控制
   If a government or organization tightens its grip on a group of people or an activity, or if its grip tightens, it begins to have more control over it.
   1. He knows he has considerable support for his plans to tighten his grip on the machinery of central government...
      他清楚有相当多的人支持他对中央政府机构加强控制的计划。
   2. As the regime's grip on the mainland tightened over the next few years, hundreds of thousands more people fled south.
      随着后来几年那个政权加强对大陆的控制，又有数十万人逃往南方。
4. VERB 拧紧，旋紧(螺钉、螺丝帽等)
   When you tighten a screw, nut, or other device, you turn it or move it so that it is more firmly in place or holds something more firmly.
   1. I used my thumbnail to tighten the screw on my lamp...
      我用拇指指甲把台灯上的螺钉拧紧了。
   2. All the bolts were fully tightened.
      所有的螺钉都拧紧了。
   3. Tighten up means the same as tighten .
      tighten up 同 tighten
   4. It's important to tighten up the wheels properly, otherwise they vibrate loose and fall off.
      把轮子拧紧是很重要的，否则它们会因振动松动、脱落。
5. VERB (身体局部)变僵硬，产生憋闷感，产生阻塞感
   If a part of your body tightens, the muscles in it become tense and stiff, for example because you are angry or afraid.
   1. Sofia's throat had tightened and she couldn't speak...
      索菲娅喉咙哽住了，说不出话来。
   2. She saw his jaw tighten and his face lose its colour.
      她看见他的下巴绷紧，脸色煞白。
6. VERB 使(规定、政策、制度)更加严格；使更加有效
   If someone in authority tightens a rule, a policy, or a system, they make it stricter or more efficient.
   1. The United States plans to tighten the economic sanctions currently in place...
      美国计划加大现有经济制裁的力度。
   2. They have tightened security along the border...
      他们加强了边境的安全工作。
   3. Take-off and landing procedures have been tightened after two jets narrowly escaped disaster.
      在两架喷气机差点出事故之后，起飞和降落的操作规程更加严格了。
   4. Tighten up means the same as tighten .
      tighten up 同 tighten
   5. Until this week, every attempt to tighten up the law had failed...
      到本周为止，一切旨在严格执法的努力都失败了。
   6. He accused ministers of breaking election pledges to tighten up on immigration.
      他指责部长们没有兑现在竞选中许下的加强移民管制的诺言。
7. to tighten your belt → see: belt

1. An attempt by anti-abortionists to tighten the rules was defeated.
   反堕胎者所作的加强法规的尝试失败了。
2. Clearly, if you are spending more than your income, you'll need to tighten your belt.
   明摆着，要是你入不敷出，你就得省着点了。
3. These stomach exercises will tighten abdominal muscles
   这些腹部练习会增强腹肌。
4. This treatment helps tone the body, firm up muscles and tighten the skin
   该治疗有助于强身健体、紧致皮肤。
5. The government has decided to tighten its immigration policy.
   政府决定实施更加严格的移民政策。
6. Some countries tighten monetary policy to avoid inflation
   一些国家实行紧缩银根的货币政策，以避免通货膨胀。
7. They are now under a great deal of pressure to tighten their airport security
   他们现在承受着加强机场安保措施的巨大压力。
8. The thought of Nick made her throat tighten
   一想到尼克，她的喉咙就发紧。
9. Luke answered by tightening his grip on her shoulder
   卢克的回应就是把她的肩头抓得更紧了。
10. Her arms tightened about his neck in gratitude
    她充满感激，把他的脖子搂得更紧了。
11. Stefano's grip tightened and his tone became colder.
    斯蒂芬诺的手抓得更紧了，语气也更冷了。
12. The anchorman flung his whole weight back, tightening the rope
    那个压阵队员使尽了全身力气往后拽，把绳子拉得紧紧的。
13. The cables tightened and he was lifted gradually from the deck.
    缆绳绷紧了，他被慢慢地吊离了甲板。
14. He knows he has considerable support for his plans to tighten his grip on the machinery of central government
    他清楚有相当多的人支持他对中央政府机构加强控制的计划。
15. As the regime's grip on the mainland tightened over the next few years, hundreds of thousands more people fled south.
    随着后来几年那个政权加强对大陆的控制，又有数十万人逃往南方。
16. I used my thumbnail to tighten the screw on my lamp
    我用拇指指甲把台灯上的螺钉拧紧了。
17. All the bolts were fully tightened.
    所有的螺钉都拧紧了。
18. Sofia's throat had tightened and she couldn't speak
    索菲娅喉咙哽住了，说不出话来。
19. She saw his jaw tighten and his face lose its colour.
    她看见他的下巴绷紧，脸色煞白。
20. The United States plans to tighten the economic sanctions currently in place
    美国计划加大现有经济制裁的力度。
21. They have tightened security along the border
    他们加强了边境的安全工作。
22. Take-off and landing procedures have been tightened after two jets narrowly escaped disaster.
    在两架喷气机差点出事故之后，起飞和降落的操作规程更加严格了。
23. I want us to be a bit more sensible this time and tighten up.
    我要求我们这次要更加理智、更加严格要求自己。
24. It would be unseemly for judges to receive pay increases when others are having to tighten their belts.
    在其他人正不得不勒紧裤腰带的时候，给法官提高薪水是不合适的。
25. The strap is too loose. Tighten it up a bit.
    带子太松了，再勒一勒。
26. Tighten the rules and stop all loopholes.
    严格制度，堵塞漏洞。
27. I need to tighten this screw. It's loose.
    这个螺丝松了，我得把它拧紧点。
28. I have to tighten my belt this month.
    我这个月要勒紧裤腰带过日子了！
29. Several screws have come loose. I'll have to tighten them.
    几个螺丝松动了，我得拧紧他们。
30. Annual check and tighten all the screws, bolts and fixing device.
    每年检查并拧紧所有螺钉、螺栓和各种固定装置。

tighten up (on sth)

1. 变得更加严格（或小心）
   to become stricter or more careful
   1. The rope holding the boat suddenly tightened and broke.
      系船的绳子突然绷断了。
   2. His mouth tightened into a thin line.
      他的嘴抿成了一道细缝。
   3. to tighten a lid/screw/rope/knot
      拧紧盖子 / 螺钉；绷紧绳子；打紧结
   4. The nuts weren't properly tightened and the wheel came off.
      螺母没拧紧，轮子脱落了。
   5. She tightened her grip on his arm.
      她抓他的手臂抓得更紧了。

v.

tighten your belt

• 勒紧腰带（省吃俭用）
  to spend less money because there is less available

verb

1. narrow or limit
   1. reduce the influx of foreigners

   Synonym:    reduce

2. restrict
   1. Tighten the rules
   2. stiffen the regulations

   Synonym:    stiffentighten upconstrain

3. become tight or tighter
   1. The rope tightened

4. make tight or tighter
   1. Tighten the wire

   Synonym:    fasten