vital/critical/key.导航词义：重要的

1. vital:adj. 极其重要的，必不可少的.语气较强，指对于某人或某事成功或继续存在是至关重要的。

It is vital to keep promises.

遵守诺言非常重要。

These measures have played a vital role in restoring the economy.

这些措施在恢复经济过程中起到了极为重要的作用。

2. critical:adj. 紧要的，关键性的.指对将来发生的事而言十分重要的。

These talks are critical to the future of the country's overseas investment.

这些谈判对该国海外投资的前景至关重要。

It is absolutely critical for them to know the truth.

他们知道真相是至关重要的。

3. key:adj. 关键的，至关重要的.指作用十分重要或不能缺少的。

Who makes all the key decisions on foreign policy?

外交政策上所有重要的决定都是谁作出的？

Their research centred on the key factors of the solution to environmental pollution.

他们的研究集中于解决环境污染的关键因素上。

全部

1·We need to become critical text-readers.

我们需要成为批判性的文本阅读者。《柯林斯英汉双解大词典》

2·A few twentieths of a gram can be critical.

二十分之几克可能是关键的。《柯林斯英汉双解大词典》

3·She viewed the findings with a critical eye.

她以批评的眼光看待这些研究结果。《牛津词典》

4·Tom's parents were highly critical of the school.

汤姆的父母对学校提出了强烈的批评。《牛津词典》

5·The crisis is entering a crucial, critical phase.

危机正进入一个至关重要的决定性阶段。《柯林斯英汉双解大词典》

6·His report is highly critical of the trial judge.

他的报道对承审法官是高度批判的。《柯林斯英汉双解大词典》

7·If someone says something critical I take it to heart.

如果谁说一些批评的话，我就往心里去。《柯林斯英汉双解大词典》

8·The incident happened at a critical point in the campaign.

该事件发生在运动的关键时刻。《柯林斯英汉双解大词典》

9·I gather his report is highly critical of the trial judge.

我猜想他的报告毫不留情地批判了庭审法官。《柯林斯英汉双解大词典》

10·He had read many detailed critical appraisals of her work.

他读了许多详细评论她的作品的文章。《牛津词典》

临界

1·Is five seconds on the floor the critical threshold that separates a piece of eatable food from a case of food poisoning?

在地上停留五秒钟是将可食用食物与食物中毒区分开来的临界阈值吗？

2·So is five seconds on the floor the critical threshold that separates a piece of eatable food from a case of food poisoning?

那么，在地板上放五秒钟这个时间，是将可食用食物与食物中毒区分开来的临界阈值吗？

3·When this model is combined with the theory of excluded volume experimental critical compressibility factor and boyle value are obtained together.

当该模型与排除体积理论结合时，可同时获得实验临界压缩系数和博伊尔值。

4·And the critical safety functions are listed here, and people might have somewhat different definitions but we want to keep the fission products within the fuel as one safety function.

临界的安全功能就列在这里，人们可能有一些不同的定义，但是我们要保持这些裂变生成物，在燃料里由于一个安全的功能。

5·This chart gives you a summary of some of the critical thermal-neutron cross sections of important fissile and fertile nuclides.

这个图表给你们一个重要的,可裂变和可转换核素的,一些临界热能中子横截面的总结。

批判的

1·His report is highly critical of the trial judge.

他的报道对承审法官是高度批判的。《柯林斯英汉双解大词典》

2·I gather his report is highly critical of the trial judge.

我猜想他的报告毫不留情地批判了庭审法官。《柯林斯英汉双解大词典》

3·All of our cultural heritage which is useful should be inherited, but in a critical way.

我们所有有用的文化遗产都应该以一种批判的方式得到继承。

4·Cash was a great journalist, intellectual historian in his own right, deeply critical of his beloved South.

卡什是个杰出的记者，同时也是个卓越的历史学家，他对他所热爱的南方进行了深刻的批判。

5·Mendelssohn's enduring popularity has often been at odds—sometimes quite sharply—with his critical standing.

门德尔松经久不衰的声望经常与他的批判立场产生矛盾，有时甚至是尖锐的矛盾。

批评的

1·She viewed the findings with a critical eye.

她以批评的眼光看待这些研究结果。《牛津词典》

2·Tom's parents were highly critical of the school.

汤姆的父母对学校提出了强烈的批评。《牛津词典》

3·The report is critical of the department's waste of resources.

报告批评了这个部门对资源的浪费。《牛津词典》

4·When I produced this piece of work, my lecturers were very critical.

当我创作这件作品的时候，我的老师们批评甚多。《柯林斯英汉双解大词典》

5·Wall Street analysts have been highly critical of the company's seeming inability to control costs.

华尔街的分析家们对该公司似乎无力控制成本一事一直批评甚多。《柯林斯英汉双解大词典》

批判性的

1·We need to become critical text-readers.

我们需要成为批判性的文本阅读者。《柯林斯英汉双解大词典》

2·This view is contrary to the aims of critical social research for a number of reasons.

许多原因证明这种观点与批判性社会研究的目的截然相反。《柯林斯英汉双解大词典》

3·There are two main structuralist techniques incorporated into critical social research.

批判性社会研究中融入了两种主要的结构主义分析技巧。《柯林斯英汉双解大词典》

4·Make yourself into a habit of critical thinking.

使自己养成批判性思维的习惯。

5·Like every other skill, critical thinking takes practice.

和其他技能一样，批判性思维是需要练习的。

关键性

1·This critical step activates the vibration of your desire.

这关键性的一步触发了的愿望的振动。

2·The reports need to answer the critical questions: Who, When, Where, What, With whom, by what Means and Why.

这些报告需要回答关键性的问题：何时、何地、何人、做了什么，为什么这样做。

3·Any list of good or critical or important resources is bound to be incomplete. This one is no exception.

任何“好的”、“关键性的”或者“重要的”参考资料列表都注定是不完整的，本文的列表也未能例外。

4·Meeting these prerequisites is a critical public health function that should be performed in every country as a matter of good governance.

满足这些先决条件是一项关键性的公共卫生职能，在每一个国家都应作为良好理政问题予以履行。

5·This is a critical linkage point to tie the observation of new business insights (or visibility) based on the correlation of sensor events to affecting business process change.

这是一个关键性的链接点，可基于传感器事件的相关性连接新业务可见性的观察以影响业务过程的更改。

危急

1·The boy's condition has been downgraded from critical to serious.

那个男孩的病情得到了缓解，从危急降为重症。《柯林斯英汉双解大词典》

2·During critical situations, especially when a threat is perceived, the outer core loses control and fails to regulate the impulses and instinctual responses coming from the primitive brain.

在危急情况下，特别是在察觉到威胁时，外核会失去控制，无法调节来自原始内核的冲动和本能反应。

3·Memory leaks in enterprise applications cause a significant number of critical situations.

企业应用程序中的内存泄漏会导致大量的危急情况。

4·The doctors managed to resuscitate her, but she remained in a critical condition.

医生们设法让她苏醒，但她始终处于危急状况。

5·It costs even less to retrofit existing facilities to keep their services running at critical times.

甚至比改造现有设施，使其在危急时刻保持服务运转所需的费用还要少。

危重

1·He was in a critical condition but he is recovering.

他曾病情危重，而目前病情在好转。

2·Both patients are in critical conditions.

两名患者都处在危重状态。

3·The number of firms with critical problems fell by 11% to 4, 693.

出现“危重的”财务困难的企业减少了11%，达4693家。

4·She was in a critical condition under artificial ventilation and died on 9 May.

病人的病情危重并采用人口通气治疗，病人于5月9日死亡。

5·The additional two cases in Salyan involve a 10-year-old boy, who has recovered, and a 15-year-old girl, who is hospitalized in critical condition.

萨利亚内的另外2例涉及1名已恢复的10岁男童和1名在医院病情危重的15岁女孩。

决定性的

1·The crisis is entering a crucial, critical phase.

危机正进入一个至关重要的决定性阶段。《柯林斯英汉双解大词典》

2·Regardless of whether you have taken venture capital or not, capital efficiency and bootstrapping are critical values.

不考虑你是否风险投资，资金的有效性和引导指令具有决定性的价值。

3·Business agility and, in particular, the ability of the technology infrastructure to respond to change in a timely manner have reached critical importance.

业务灵活性，特别是技术基础架构及时响应变更的能力已经达到决定性的重要程度。

4·Because of the critical need to understand and follow the process through each discipline in the development workflow, ease of use and accessibility to the process is Paramount.

因为有了通过开发工作流中每个规程来理解并依照流程的决定性需要，所以对流程的方便使用就成为极其重要的事情了。

5·Reagan’s critical contribution was to change the terms of the debate.

里根对美国社会的决定性贡献是他改变了辩论的措辞。

危险的

1·The first 24 hours after the operation are the most critical.

病人手术后头24小时是最危险的。《牛津词典》

2·He remained in a critical condition after suffering heart failure.

他患心力衰竭之后一直处于危险状况。《柯林斯英汉双解大词典》

3·The sudden decline in foot traffic in recent years, even though it hasn't been accompanied by a massive decline in physical sales, is a critical warning.

近年来客流量的突然锐减是一个危险的警告，尽管它并没有伴随实体销售的大幅下降。

4·If the value is above or below warning levels but does not exceed critical limits, the state is set to warning.

如果该值大于或者小于警告级别，但是并没有超过危险极限，则将状态设置为WARNING。

5·The situation has grown so critical that beekeepers are warning there will be no British honey left in the shops by Christmas.

形势变得如此危险，以致养蜂人警告说，到圣诞节，商店里将剩不下英国产蜂蜜了。

(1)critical point临界点

(1)critical thinking批判性思维，批判性的思考；批判思考能力，判断思维

(1)critical factor关键因素；临界因素

(1)critical value临界值

(1)critical of挑剔；对……感到不满，对……表示谴责

(1)critical moment关键时刻；临界力矩，临界时限