We omitted some optional fields for simplicity.
为了简单起见，我们省略了一些可选域。
Some optional items that I found useful are as follows.
一些可选项目，我发现有用的内容如下。
Some optional subelements, including a set of elements each mapped to a locale.
一些可选的子元素，包括一组元素，这组元素中的每个元素都映射到一个位置。
This file is primarily the data for the chart, along with some optional visual information.
这个文件基本上都是用于图表的数据，还有一些可选的视觉信息。
The article wraps up with some optional features you can use to further streamline this process.
本文最后将给出一些可以用于进一步简化此流程的可选功能。
Hotel is a standard point and click adventure that can be played entirely by mouse with some optional keyboard shortcuts.
酒店是一个标准的点，然后按一下冒险，可以发挥一些可选的鼠标键盘快捷键完全。
There are also some optional textbooks and recommended Web material. And there will be some additional material handed out in class.
另外还有一些推荐的教材和网上资料，在课堂上还会分发一些补充材料。
Basing on previous analysis, it provides some optional strategies on investment and financing for Hebei Province Construction and investment Corporation.
第四章是本文的重点，在前面分析的基础上，研究并提出河北省建投公司财务战略选择。
Of course, if some optional information is missing from the HTML document, the associate fields will be left blank, but this is not uncommon in any database.
当然，如果某些任选信息在HTML文档中缺失，有关字段就留作空白，但这种情况在任何数据库中都是常见的。
If you want to omit some optional parameters, then select Check if you want to select optional parameters for this interface and then select No for the optional parameters that you want to omit.
如果需要忽略某些可选参数，则选中Checkifyouwanttoselectoptionalparametersforthisinterface，然后对需要忽略的可选参数选择No。
Why couldn't we add a simple mechanism to PubSubHub so that when a client subscribes to push updates, it leaves behind some optional identifying information about the user like their name and avatar?
我们为什么不给PSHB协议添加一种简单机制，当客户端订阅推送更新时会留下一些识别信息，如姓名、头像等？
Sex education is a sensitive area for some parents, and thus it should remain optional.
性教育对一些家长来说是个敏感的话题，因此应该还是非强制性的。
In the new curriculum, some courses are compulsory, while others are optional for middle school students.
在新课程中，一些课程是必修课，而另一些是中学生的选修课。
If you see humor as an optional form of entertainment, you're missing some of its biggest benefits: humor makes average-looking people look cute and uninteresting people seem entertaining.
如果你认为幽默只是一种可有可无的娱乐形式，那你就忽略了幽默最大的好处：幽默能让长相平平的人看起来更可爱，也能让呆板无趣的人看起来更有趣。
In this process, some of the variables are primary elements that are necessary for input, while others are optional.
在这一过程中，一些变量是基本的元素，是必须输入的，而其它一些却是可选的。
Some courses in college are required while others are optional.
大学里有的课程是必修的,有是是选修的.
Some courses in college are required while others are optional.
大学里有的课程是必修的，有是是选修的。
Some functions contain optional input parameters, which you can add or remove as needed.
一些函数包含可选的输入参数，可以根据需要添加或删除它们。
Get tired of typing in all the arguments every time, so make some of the arguments optional, with default values.
厌倦了每次都输入所有的参数，于是让一些参数成为可选的参数，让这些参数带有默认的值。
It defines some semantics for how to treat headers such as whether processing of the header is optional.
它定义了一些关于如何处理消息头的语义，比如头的处理是不是可选的。
They have a title, optional image, an optional title drop-down menu, and some other useful features (see Listing 2).
它们拥有标题、可选图像、可选标题下拉菜单和其他一些有用的特性(见清单2)。
Some of these actions provide an optional search for duplicates based on the selected text or artifact.
其中有些操作提供了基于选定文本或构件的可选副本搜索。
Optional features are requirements that are present in some members of the product line, and alternative features are requirements that some members of the product line choose from.
可选功能是产品线的部分成员中存在的需求，替代功能是产品线的部分成员从中进行选择的需求。
In addition, in some programs some structures are optional.
此外，在某些程序中有一部分结构是可选的。
If for marketing purpose or for some other reasons where optional fields are needed, we suggest to mark optional fields clearly instead of indicating the mandatory fields.
如果出于市场调查或其他一些理由需要放一些选填内容，我们建议清晰地标注这些问题，而不是把必填内容标注出来。
In this article, we'll explore each of the major components of the JFC and then discuss some of the optional extensions.
在本文中，我们将讨论J FC的每个主要组件，并讨论一些可选的扩展。
There also are plenty of optional safety equipments that you can get if you want some extra safety in the car.
如欲使爱车更加安全，另有大量的选装安全装备可供选择。
Bad: Sometimes a schema indicates that a data item is optional when some other part of the system downstream fails without the data. Here is an optional element in XML schema.
不好的方法：有时候模式中会指示数据项为可选，但系统中其他的部分却可能因为这部分数据的缺失而失败。
But since this was an optional step in XML Extender, some users might not have a collection at all.
但是因为这是XMLExtender中的一个可选步骤，所以有些用户可能根本就不具有集合。
But since this was an optional step in XML Extender, some users might not have a collection at all.
但是因为这是XMLExtender中的一个可选步骤，所以有些用户可能根本就不具有集合。
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