您要查找的是不是：
- The user deciphers the error message and eventually discovers that a required element is missing. 用户通过理解错误消息,最终发现一项必需的元素缺失了。
- Empty items are not created when blank cells exist for an optional element, but empty items are created when blank cells exist for a required element. 如果存在可选元素空白单元格,则不会创建空项目,但是如果存在必需元素空白单元格,则会创建空项目。
- The domain identifier is the primary identifier and is the only REQUIRED element of a JID (a mere domain identifier is a valid JID). 域标识符是主要标识符，且是JID中唯一的一个必须有的元素（有域标识符的JID才是有效的）。
- The optional binding elements that specify the other communication protocols are layered above these two required elements. 用于指定其他通信协议的可选绑定元素位于这两个必需元素的上面。
- To produce a quality EPR it is important to consider all of the required elements of reporting prior to drafting the detailed text of your EPR. 制备一份质素优良的环保工作报告,可于草拟报告详细内文前,认真考虑报告所有的必要内容。
- Proofreading artwork to confirm accuracy of photos, illustrations, part numbers, UPC codes, text and other pertinent and required elements. 审核印刷打样稿;检查图象的准确性;图解及零件编号;UPC码;文字和其他固定;要求的元素.
- By using this directory, the required elements will be located on the LFS partition and will be available during all stages of the building process. 通过使用这个目录，所需要的元件将会放在LFS分区上，并且在构建过程的所有步骤中都可以存取。
- In a printer, the removable type element. 印刷机上可拆卸的打印部件。
- Control in a Web application without the other required elements for a Web Parts application, the control simply loses its Web Parts features and functions as an ordinary server control. 控件,但没有某个Web部件应用程序所需的其他元素,则该控件将只丢失其作为普通服务器控件的Web部件特性和功能。
- He's in his element when playing badminton. 他打起羽毛球来真是得心应手。
- All passengers are required to show their tickets. 所有乘客都必须出示车票。
- This heater needs a new element. 这个加热器需要一组新电阻丝。
- I'm out of my element in political discussions. 我不喜欢参加政治讨论。
- Maintenance of PC is in my element. 我对电脑的维修保养很在行。
- Sulphur was not identified as an element until1810. 1810年以前还没有认出硫是一种元素。
- The scientists are in search of a new element. 科学家们正在寻找一种新元素。
- It is required (of me) that I give evidence. 要求我提供证据。
- Supplier Requirements are defined in the following thirteen (13) sections each of which contains a number of detailed requirement elements, in total 77. 对供应商的要求在下面的13节进行了规定，每一节包含了一些具体的要素，共有77项。
- If you are comfortable extracting needs in this format, it works quite well; otherwise, you may find it helpful to separate them into data, functional, and contextual requirements, as described in the following sections. 如果你习惯于以这种方式提取需求，那很好；否则你可以像下面的一些小节描述的那样将它们区分成数据的、功能的和情境的需求。
- You're required to submit a resume. 你必须交一份个人简历。
