sign n. 标记，符号，手势，姿势，征兆，迹象 v. 签名，署名

例句：A nod is a sign of agreement.
点头是同意的姿势。

assign vt. 分配，指派 v. 赋值
例句：Influenced by old ideas, some corporations assign posts according to seniority.
由于受旧观念的影响，有些公司按资排辈来分配工作。

assignment n. 分配，委派，任务，（课外）作业
例句：How are you going to get through the assignment?
你将如何完成作业？

delegate n. 代表 vt. 互派……为代表……
例句：The new manager was delegated to reorganize the department.
这位新经理被委派为重新组织该部门的代表

design n. 设计，图案，企图，构思 v. 设计，计划，构思
例句：The scarfs were designed for extremely cold climates.
这些围巾是为严寒地区制造的。

designate vt. 指明，任命，指派 v. 指定，指派
例句：The chairman has designated that boy as his successor.
主席已经指定那个男孩做他的继承人。

signify v. 表示，意味，颇为重要，表示
例句：A headache usually signifies that there is something wrong with the body.
头疼通常意味着身体有点毛病。

significant adj. 有意义的，重大的，重要的
例句：Even in the same or similar cultures, there can be significant misunderstandings in oral communication．
即使在相同或相似的文化背景下，口头交流也可能有明显的误解。

significance n. 意义，重要性
例句：This new discovery of oil is of great significance to this country’s.
这次新发现的石油对这个国家的经济有着重大的意义。