Assuming that your XHTML document is valid (and it is, right?), the id matching queries will only return one element, because IDs must be unique in a valid XML document.
假设您的XHTML文档是有效的(确实是的，对吧？)，ID匹配查询将只返回一个元素，因为在有效的XML文档中，ID必须是惟一的。
This makes it an especially useful ID, because you can use it to sort by, as you will see later.
这是一个非常有用的ID，因为我们可以用它来进行排序，我们将在后面使用到。
Each subscriber's message has a different ID because each subscriber gets its own copy of the message.
每个订阅者消息都有不同的ID，这是因为每个订阅者都得到其消息的副本。
The sales department will need to extract only the name of the book, its item ID and the quantity ordered; because this is insensitive information it can remain insecure.
销售部门只需抽取出书名、它的项标识以及订购数量；因为这些信息是它可以保留的无需安全的不敏感信息。
Now you can relate the extracted concepts with the key ID, because this column is also contained in the operator output.
现在您可以将提取的概念与键ID关联起来，因为该列也被包含在操作符输出中。
You don't have to worry about security when your ID has a password on it, because the entire form has Reader/Author privileges that can be set.
当您的ID具有一个用于其上的口令时，不必担心安全问题，因为整个表单具有可设置的读者/作者权限。
Parents can't take over - well, more on that later - because the student wears an ID bracelet that has to be swiped across the doll's belly before it will accept care.
父母也不能代替孩子们来照看娃娃(好吧，这个待会说)，因为孩子们戴了手镯，在娃娃接受照料之前必须把手镯往娃娃的肚子上扫描一下。
The username information is not included in the record because it is encoded according to the users ID.
因为是根据用户ID进行编码的，所以该记录中不包括用户名信息。
This complicated links from one to another, because we did not know if the target topic would be included or what id it would use when included.
这就增加了彼此之间链接的复杂性，因为我们不知道目标主题是否要包含在图书中，也不知道如果包含将使用什么ID。
The code in Listing 9 causes an error because it tries to use an ID that already exists in the database.
清单9中的代码导致了错误，因为它试图使用数据库中已经存在的ID。
Deletes need no added support because the current code already USES the URL to specify the ID of the person to be deleted.
删除不需要额外的支持，因为当前的代码已经用url指定了要删除的人的ID。
Note: This id is not officially documented because it is considered internal and subject to change without further notice.
注意：这个ID没有正式的文档记载，因为它是内部的，可能改变而无须通知。
However, you could not transmit the ID of the dynamic page instance using that argument because you do not know the ID before the page has been launched.
不过，您不能使用该参数传送动态页面实例的ID，因为在启动页面之前您不知道它的ID。
If PETER had not explicitly indicated the schema, then the table PETER.TABLEA would have been created, because the connection ID is used by default.
如果PETER没有显式地指定模式，那么就会创建表PETER . TABLEA，因为在默认情况下使用连接id。
You give the view an ID; you may want to use the Class name because it is typically unique.
为视图提供一个ID，这里可以使用类名，因为它通常是惟一的。
Crawlability impact: Spiders are less likely to crawl a URL with a session id because there's a strong likelihood the content is a copy of another URL.
对抓取的影响：搜索引擎爬虫很少检索一个URL的会话id，因为有一个重要的可能，这个内容可能是另外一个URL的副本。
A few of the HTML tags in this sample are intentionally shown collapsed, because they contain the object ID references that are handled by the server.
范例中的一些HTML标记故意地分解显示，因为它们包含了服务器处理的对象ID引用。
Generating session scope cache keys is simple and cheap because the session provides you with a specific id that can be leveraged.
生成会话范围缓存键很简单，开销也很低，因为会话向您提供了可以使用的特定ID。
While the id is randomly generated, it is still subject to replay attacks because it does not timeout (except when idle).
虽然该ID是随机生成的，但是它仍然受重播攻击的影响，因为它没有超时(除非处于空闲状态)。
I also knew that the system serial number was guaranteed not to change, so I wasn't going to have application licensing problems because the system ID had changed.
我也知道系统序列号肯定不会变，所以不会出现由于系统ID变化导致的应用程序许可证问题。
JQuery only returns the first matching element when using the ID selection, because it expects you to follow proper page design.
使用ID选择时，jQuery仅返回第一个匹配的元素，因为它要求您遵循正确的页面设计。
Observe that because the ID field is a GeneratedValue, it appears as disabled.
注意，因为ID字段是一个GeneratedValue，所以它看起来被禁用了。
Case ID is also important because it enables the grouping of all documents associated with a particular change request.
caseID也很重要，因为它将与一个特定更改请求相关的所有文档集合在一起。
Be sure to remember this ID and password because you need them to administer the Lotus Sametime server later.
一定要记住这个ID和密码，因为以后管理LotusSametime服务器时需要它们。
Now, though, you need to indicate the field to store the author's ID in, as well as what table to store that field in, because the author's ID never ends up in the dw_books table.
但是现在需要说明该字段要存储作者ID以及该字段要存储到哪个表，因为作者ID在dw_books表中不存在。
Alexandria — because it is a valid user id.
Alexandria——因为它是一个有效的用户id。
Each element in the form contains a unique id because you want to be able to identify each piece using jQuery.
表单内的每个元素均包含一个惟一的ID，因为我们想要能够使用jQuery标识每一块。
Each element in the form contains a unique id because you want to be able to identify each piece using jQuery.
表单内的每个元素均包含一个惟一的ID，因为我们想要能够使用jQuery标识每一块。
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