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adj.必需的；（美）必修的
v.需要（require的过去式及过去分词形式）；要求
1、require───vt.需要；要求；命令
2、requirer───需求者
3、-quired───要求
4、requitted───需要
5、reacquired───adj.再获得的；重新获得的；v.重新获取（reacquire的过去式和过去分词）
6、acquired───adj.[医]后天的；已获得的；已成习惯的；v.取得；捕获（acquire的过去分词）
7、requited───vt.报答，回报；酬谢
8、requires───n.需要；要求；需求（require的复数）；vt.需要（require的第三人称单数形式）
9、unrequired───不需要的
1、The job required a subtle mind.───那项工作需要一个头脑敏锐的人去做。
2、The situation required that he be present.───这种情形需要他在场。
3、This matrix helps you define how much time is required for a specific role to complete its tasks.───该矩阵将帮助您定义某个特定角色完成其任务所需的时间。
4、Setting up training programmes. Organising a training workshop, deciding on the sort of training required and who will need training.───安排培训程序。组织培训工作间，决定培训顺序以及谁将参加培训。
5、Although this work is critical, it covers only a portion of the total planning effort required over the lifetime of a portal.───虽然这项工作非常关键，但它仅涵盖了整个门户生存期中所需的总体规划工作的一部分。
6、In a more complex scenario, two or more disparate applications might be required to run on the same site, yet be isolated from each other.───在更复杂的方案中，可能需要在同一站点上运行两个或多个不同的应用程序，并且要彼此隔离。
7、The incarnating soul often carries with it these tendencies, to avoid confrontation or to stubbornly insist that change is not required.───化身的灵魂经常带有这些倾向，以避免对峙或是以坚持不需要变化。
8、Fluency in French is required for this job.───这个工作要求法语熟练自如。
9、Now that I have accepted the position, I shall certainly do to the best of my ability all that is required of me.───我既然接受了这个职位，就会尽自己的所能完成本职工作。
1、The situation required that he be present.
2、To preserve a friend three things are required: to honour him present, praise him absent, and assist him in his necessities.
3、A deposit of 10% is required.
4、The written consent of a parent is required.
5、Total concentration is required with no distractions.
6、Students are required to undertake simple experiments.
7、Set the dial for the number of copies required.
8、Part-time barman required. Hours and salary negotiable.
9、Some persuasion would be required to overcome her scruples.