Element is a general term most broadly used , refers to any basic , necessary part of a whole, concrete or abstract .
最广义的通用词，指任何具体的或抽象的整体事件中的基本的，不可缺少的一部分。In mammals, females are XX while males are XY so a woman should never be able to provide the necessary Y chromosome genes to produce a son.
在哺乳动物中，雌性的性染色体是XX，而雄性的是XY，所以一个女人是绝不可能产生男性不可缺少的Y染色体基因而生育男孩的。The ability to concentrate on those issues at the heart of the negotiation is an asset the CN cannot afford to be without.
全神贯注于那些谈判中的核心问题的能力应成为首席谈判不可缺少的素质。Visiting cards used to be an indispensable attribute of the etiquette and the rules of their use were as sophisticated as those of cutlery.
过去拜访卡是礼节一个不可缺少的组成部分，而且它们的使用规则像餐具的使用规则那样复杂。For executives in global companies, international experience is often essential for career advancement.
在跨国公司的经营者，常常是不可缺少的国际经验的职业发展机会。Betty: But still, wining and dining is often a necessary part of making a deal.
贝蒂：但是要把生意谈成，喝酒和吃饭常常是不可缺少的一部份。The meaning , tongue diagnose used in clinic . stick out a smile . and the image of tongue is also be a impersonality proof .
中医舌诊的临床意义显而易见，同时舌象又是作为中医诊断辨证的不可缺少的客观依据。Delicate , lovely . Easy to carry , our life is an indispensable items .
精巧，可爱。携带方便，是我们生活中不可缺少的物品。The university student is the part of the indispensability in the network customer, is also the point object of many website construction.
大学生是网络用户中不可缺少的部分，也是许多网站建设的重点对象。