tighten

《柯林斯词典》中tighten的解释：

动词：
1. （使）变紧；（使）绷紧；（使）收紧
2. （使）变得更加困难；（使）变得更加严格
3. 加紧；加强
4. （使）变得更加紧密；（使）更加结实
形容词：
1. 紧绷的；固定的
2. 紧密的；坚固的；结实的
名词：
1. 紧缩；收紧
2. （资金等的）紧缺

《牛津词典》中tighten的解释：

动词：
1. （使）变紧；（使）绷紧；（使）收紧
2. （使）变得更加困难；（使）变得更加严格
3. 加紧；加强
4. （使）变得更加紧密；（使）更加结实
形容词：
1. 紧绷的；固定的
2. 紧密的；坚固的；结实的
名词：
1. 紧缩；收紧
2. （资金等的）紧缺

词语辨析：

1. tighten与loosen：
- tighten表示使某物变得更加紧固或加强，而loosen则表示使某物变得松弛或放松。
例句：He tightened the screws to secure the shelf. （他拧紧螺丝以固定架子。）
- tighten也可用于比喻意义，表示加强或加强控制。而loosen则表示减少或放松控制。
例句：The government needs to tighten regulations on pollution. （政府需要加强对污染的监管。）

2. tighten与narrow：
- tighten表示使某物变得更加紧密或结实，而narrow则表示使某物变得更加狭窄或缩小。
例句：She tightened her grip on the handlebars. （她把手紧紧地抓住了把手。）
- tighten也可用于比喻意义，表示限制或减少，而narrow则表示限制或减少选择或范围。
例句：The new regulations will tighten access to public funds. （新规定将限制对公共资金的使用。）

词汇扩充：

1. tighten one's belt：勒紧裤腰带，过紧日子
2. tighten the screws：加大压力，加紧限制
3. tighten the noose：加紧控制，加大压迫
4. tighten one's grip：紧握，加强控制
5. tighten security：加强安全措施

近义词：

secure, fasten, strengthen, firm up, clamp, fix

反义词：

loosen, relax, loosen up, ease

用法：

- tighten作为动词可直接接宾语，也可与介词on或up连用。
例句：She tightened the rope around the package. （她把绳子绕在包裹上紧了。）
例句：They need to tighten up the security measures. （他们需要加强安全措施。）
- tighten作为名词时，常与动词形式的介词to连用。
例句：The government's new policies will lead to a tighten of regulations. （政府的新政策将导致对法规的收紧。）

例句：

1. He tightened his grip on the steering wheel as the car skidded on the icy road.（当车子在冰路上打滑时，他紧紧抓住了方向盘。）
2. Please tighten the screws to secure the shelves to the wall.（请拧紧螺丝，把架子固定在墙上。）
3. As the economy worsened, the government decided to tighten controls on spending.（随着经济恶化，政府决定加强对开支的控制。）
4. The company plans to tighten its security measures following the recent data breach.（公司计划在最近的数据泄露事件后加强安全措施。）
5. The teacher told the students to tighten their focus and concentrate on their studies.（老师告诉学生们要集中注意力，专心学习。）
6. The government's new policies will lead to a tighten of regulations on environmental protection.（政府的新政策将导致对环境保护法规的收紧。）
7. She tightened the belt around her waist to make her dress fit better.（她把腰带勒紧，使得连衣裙更合身。）
8. The company is facing a financial tighten due to the decrease in sales.（由于销售额下降，公司正面临着资金紧缩。）
9. The government has announced plans to tighten restrictions on foreign investment.（政府已宣布计划加强对外国投资的限制。）
10. She tightened her grip on the handlebars as she rode down the steep hill.（她在骑行下陡坡时紧紧抓住了把手。）
11. The company needs to tighten up its recruitment process to ensure only qualified candidates are hired.（公司需要加强招聘流程，确保只有合格的候选人被聘用。）
12. As the deadline approached, the team had to tighten their schedule to finish the project on time.（随着截止日期的临近，团队不得不紧缩进度，以按时完成项目。）
13. His grip tightened on her arm as they walked through the dark alley.（他们穿过黑暗的小巷时，他的手紧紧地抓住她的胳膊。）
14. The company is tightening its belt to survive the economic downturn.（公司正在勒紧裤腰带以度过经济低迷时期。）
15. The government has tightened regulations on the use of plastic bags to reduce environmental pollution.（政府已加强对塑料袋使用的法规以减少环境污染。）
16. The company is facing a tighten of credit as banks tighten lending standards.（由于银行加紧贷款标准，该公司面临信贷紧缩。）
17. She tightened her grip on the microphone and began her speech.（她紧紧抓住麦克风，开始演讲。）
18. After the security breach, the company decided to tighten up access to sensitive information.（在安全漏洞之后，公司决定加强对敏感信息的访问限制。）
19. The government has tightened regulations on the sale of tobacco products.（政府已加强对烟草产品销售的法规。）
20. The company is tightening its budget in order to reduce costs.（为了降低成本，公司正在紧缩预算。）
21. She tightened the knot on her shoelaces to make sure they wouldn't come undone.（她把鞋带的结紧一些，以确保它们不会松开。）