In particular, if an element can contain only other elements, be sure to indicate that in the DTD.
特别是，如果一个元素仅能包含其它元素，那么一定要在DTD中表明。
With this extra element, you can specify the CSS selectors that address only the elements in this scope.
使用额外的元素，您可以指定仅处理该范围中的元素的css选择器。
In this case, a rule applies only to elements that immediately follow another particular element.
在这种情况下，规则只应用于跟在另一个元素后面的元素。
You may find yourself in a situation where you want only the textual content of the target element, and would rather omit all nested elements' textual content.
您可能发现自己会有这样的要求：只希望得到目标元素的文字内容，而去掉所有嵌套的元素的文本内容。
The elements used within the element may only reference a single UDDI business service.
元素中用到的元素可能只能引用一个UDDI企业服务。
What the DTD must specify, then, is that for a given element, only other elements may be within it.
所以，DTD必须指定的是：对于给定的元素，在其中仅能包含其它元素。
So you can write concise expressions that consider not only elements and element values, but also attributes, processing instructions, and so on.
因此可以编写精确的表达式来表示元素和元素值，以及属性、处理指令等等。
A channel element has a number of other elements like copyright information that occur only once and the list of items.
一个channel元素拥有多个其他元素，如仅出现一次的版权信息和项目列表。
Specialization lets MyHTML be defined as an extension of the HTML DTD, declaring new element types only as necessary and referencing HTML's DTD for Shared elements.
专门化使MyHTML被定义成htmlDTD的一种扩展，只在必要时声明新的元素类型，共同的元素则引用HTML DTD。
For example, to express a content model for "one and only one element called userName and any number of any other elements, before or after userName", you define the content model as in Listing 3.
例如，为了表示内容模型“有且仅有一个名为username的元素，但是可以有任意数量的任何其他元素，这些元素可以位于userName之前或之后”，可以定义如清单3中所示的内容模型。
Of these new elements, only howto has been declared in the entities file because the other new elements should only appear in the child list of the howto element.
这些新元素中，只有howto 需要在实体文件中声明，因此其他新建元素不能出现在 howto元素的子列表中。
Changing the location of a Property element within a configuration file only affects the relative order by which the element is processed with respect to the other elements.
改变配置文件中的Property元素的位置只影响处理该元素对于其它元素的相对次序。
Thus, while you are limited by having only one element per ID on a page, you can have many elements with the same CLASS on a page.
因此，尽管受到同一页面的每个元素只有一个ID的限制，同一页面上的多个元素仍然可以拥有相同的CLASS。
The user is not distracted by operation-supporting elements that are currently not applicable; he or she immediately recognizes which support element to use because it is the only one being displayed.
当前不可用的操作支持元素不会转移用户的注意力；用户可以立即识别出哪一个支持元素可以使用(因为支持元素是唯一显示的元素)。
Locally defined elements can only appear in the context of the element definition in which they are defined.
局部定义的元素只能出现在定义它们的元素定义上下文中。
When you create such an element, the visualization engine looks into only the code element that is selected and to its immediately related elements.
当您创建这样一个组件时，可视化引擎只会查找那些已经被选中的代码组件和与它有直接关系的组件。
To avoid creating unresolved elements, you can view a list of the read-only units that refer to the deleted element and then check out those units.
为了避免产生不能解决的元素，您可以查看引用删除元素的只读单元的列表，然后检出这些单元。
If this element is deleted, unresolved elements might be created in the read-only units.
如果这种元素被删除，那么将会创建只读单元中的不能解决的元素。
These proxy elements reside only on the diagram where they were created and require no underlying, physical UML model element.
这些代理组件仅仅存在于这个图中，它们在这里被创建，而且不需要优先的，实体uml模型组件。
The XML document has only elements and element text nodes to parse.
XML文档只需要解析元素与元素文本节点。
The elements used within the element can only reference a UDDI business entity.
元素中使用的元素只能引用一个UDDI企业实体。
The root element has only one child element named and all the elements are made children of the element.
根元素只有一个子元素，称为，而所有元素均是元素的子元素。
If "phone" was an attribute of the employee element, then it can exist only once per employee, and we could not add child elements too it, which may hinder schema evolution over time.
如果“phone”是雇员元素的一个属性，那么对于每个雇员，它只能出现一次，我们也不能为之添加子元素，这将妨碍模式随时间而变化。
Suppose you only want to select the three elements but not the element.
假设只需选择3 个元素，而不需要选择元素。
Only Choice elements are allowed in a DeviceSpecific element.
设备特定元素中只能包含选择元素。
This method is particularly useful when processing element-only content (that is, elements declared as EMTPY in the Document Type Declaration, or DTD).
该方法在处理纯元素(即文档类型声明DTD中声明为EMPTY的元素)内容时尤其有用。
It is sufficient to base performance measurement on only one element if the workload elements are reactive and depending on each other for propagation.
对于基础性能测量，如果若干负载元件对于传播来说是活动性的，而且是相互依存的，那么只对一个元件进行测量就足够了。
Urban block is not only a basic element of city but one of the most important elements in urban design.
街区是城市的基本单元，也是城市设计中的重要元素之一。
The shallow value is the value of the specific element only, as opposed to the deep value, which includes the values of all descendent elements concatenated into a single string.
浅值只是特定元素的值，与深值相反，包括串联成一个单一字符串的所有子元素的值。
The shallow value is the value of the specific element only, as opposed to the deep value, which includes the values of all descendent elements concatenated into a single string.
浅值只是特定元素的值，与深值相反，包括串联成一个单一字符串的所有子元素的值。
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