crucial

词根：cruc=cross，表示”十字形，交叉”adj.crucial至关重要的，决定性的cruc十字形，交叉+ial…的→十字路口→决定性的

还可以谐音：可入手，在至关紧要的时刻可入手。

词语搭配 crucial与以下词性连用 n. crucial decision 重要决策 crucial development 重要发展 crucial role 关键作用 crucial skill 关键技能 crucial stage 重要阶段 crucial to something 对…至关重要的

词根 cruc(i), crus= cross 十字形；交叉 crucial adj. 关键的；十字形的 cruc 十字形；交叉 + ial …的 → 在十字路口的 → 关键的 cruciform adj. 十字形的 cruci 十字形；交叉 + form 形状 → 十字形的 crucify v. 钉在十字架上；折磨 cruc 十字形；交叉 + ify 使… → 使在十字架上 → 折磨 crusade n. 十字军；改革运动 crus 十字形；交叉 + ade 表行动的个人或团体 → 十字军 crux n. 难点；关键 crux〔crus 的变体〕→ 十字路口 → 关键 excruciate v. 受酷刑；拷打 ex 加强 + cruci 十字形；交叉 + ate 做，造成，使… → 钉在十字架上 → 受酷刑 excruciation n. 酷刑，拷问 excruciate的名词

essential vital crucial critical decisive indispensable These words all describe sb/sth that is extremely important and completely necessary because a particular situation or activity depends on them. 以上各词均表示极其重要、完全必要、必不可少。 essential extremely important and completely necessary, because without it sth cannot exist, be made or be successful 指极其重要的、完全必要的、必不可少的： Experience is essential for this job. 对于这个工作，经验是非常重要的。 vital essential 指极其重要的、完全必要的、必不可少的： The police play a vital role in our society. 警察在我们的社会中起着极其重要的作用。 用essential还是vital？ There is no real difference in meaning between these words and they can be used with the same range of nouns and structures. However, there can be a slight difference in tone. Essential is used to state a fact or opinion with authority. Vital is often used when there is some anxiety felt about sth, or a need to persuade sb that a fact or opinion is true, right or important. Vital is less often used in negative statements. 以上两词在意义上无实质区别，均可与相同的名词连用，并使用相同的结构，只是在语气上稍有区别。essential用以说明事实或表明权威意见，vital常用于对某事感到忧虑或需要使人信服某一事实或意见确实、正确或重要等情况。vital较少用于否定句： It was vital to show that he was not afraid. 他表现得毫无畏惧是十分重要的。 Money is not vital to happiness. crucial extremely important because a particular situation or activity depends on it 指至关重要的、关键的： It is crucial that we get this right. 我们把这个问题弄明白是极其重要的。 critical extremely important because a particular situation or activity depends on it 指至关重要的、关键的： Your decision is critical to our future. 你的决定对我们的将来至关重要。 用crucial还是critical？ There is no real difference in meaning between these words and they can be used with the same range of nouns and structures. However, there is sometimes a slight difference in context. Critical is often used in technical matters of business or science; crucial is often used to talk about matters that may cause a