In most cases, a conditional block issues user input actions depending on the value of a reference.

大多数情况下，一个条件块依靠一个引用的值发出用户输入动作。

When a user agent can't parse the selector, it must ignore the declaration block as well.

当一个用户代理不能解析某个选择器的时候，它必须忽略整个声明块。

The first block performs some initialization, then retrieves the contents from the cart, asking the user to confirm the contents.

第一个块完成一些初始化工作，然后检索购物车的目录，并请求用户确认目录。

For instance, a user could spot that the input for a text block is being echoed on the following page and take advantage of that echo.

例如，用户可以发现文本块的输入被返回到以下页面上并且要利用那些返回信息。

Specifically, if everything is happening in a single thread, performing long operations such as network access or database queries on the UI thread will block the whole user interface.

特别是，如果把所有的事件都放在主线程中来处理，需要长时间来处理的事件比如网络访问或者数据库查询，会阻塞整个UI。

If a matching User is found, you create a query block.

如果找到了一个匹配的User，就需要创建一个查询块。

The UIP Application Block is a framework for building user interface process components. These components are responsible for

UIP Application Block 是一个构建用户界面组件的框架，这些组件主要负责

The command bean is instantiated and a try catch block is used to catch exceptions generated from a duplicate user, an invalid credit card, or an unauthorized credit card.

命令 bean 被实例化，try catch 块被用于捕捉由于重复的用户、无效的信用卡或未经认证的信用卡而产生的异常。

The call stack passes the exception to the catch block, and that is how it gets returned to the user.

调用栈将异常传递给catch块，异常正是通过这种方式被返回给用户的。

This helps the user to focus her attention on one content block at a time which is helpful and convenient.

silders 可以帮助用户一次只关注一个内容块，这很有用并且很方便。

When memory is freed by the user, the buddy block is checked to see if any of its contiguous neighbors have also been freed.

当用户释放内存时，就会检查 buddy 块，查看其相邻的内存块是否也已经被释放。

The login.tpl.php file renders the login page with a login form copied from the user login block.

php文件显示登录页面，其中包含一个从用户登录区块复制的登录表单。

Also, minimum user activities should be allowed during this time for the fact that Oracle logs the entire block images on the first change to the block.

此外，应该在这段时间内尽量少进行用户活动，这是由于Oracle会在第一次更改块时记录下整个块的映像。

Memory blocks can be reached in one of two ways -- if the user program holds a reference to that block in a root, or if there is a reference to that block held in another reachable block.

可以以两种方式之一访问内存块 ―― 或者用户程序在 根 (root)中有对这一内存块的引用，或者在另一个可到达的块中有对这个块的引用。

When the application needs to wait for input, whether from a user at the console, a Web services client, or something else, it will typically just block.

在应用要等待(不论是来自控制台的用户、Web Services客户端，还是其它什么地方的)输入的时候，应用通常都会阻塞。

You can block emails from a particular user, or from the entire mail domain (for example, @domain.com).

可以阻止某个用户的邮件，或者阻止来自整个邮件域（例如，@domain.com）的邮件。

After reading the large comment block, note that loose matching (with a high g_range value) or long user names will drastically increase the amount of time required to check all possibilities.

在读取大型注释块后，注意松散匹配(带有一个很大的g _ range值)或长用户名将显著增加检查所有可能性所需的时间。

When the user clicks OK or presses Enter to move from user name to password entry, the logic block shown above is executed.

当用户单击ok或按enter键以从用户名移向密码输入时，将执行上面所示的逻辑代码块。

Once the user supplies the information required to fill out all of the fields, the filled block of the VoiceXML is called.

用户提供了需要填入字段的信息之后，程序将调用VoiceXML中的填充块。

The copy_from_user function copies a block of data from user space into a kernel buffer.

copy _ from_user函数将数据块从用户空间复制到内核缓冲区。

The copy_to_user function copies a block of data from the kernel into user space.

copy _ to_user函数将数据块从内核复制到用户空间。

The clear_user function is used to zero a block of memory in user space. This function takes a pointer in user space and a size to zero, which is defined in bytes.

clear_user函数被用于将用户空间的内存块清零。

In this method, a large block of memory (called the heap) is used to provide memory for user-defined purposes.

在这种方法中，大块内存(称为堆)用来为用户定义的目的提供内存。

Some phone companies in the us already offer call-blocking service, allowing the user to block calls from Numbers that are proving a nuisance.

美国的一些电话公司已经提供呼叫限制服务，它能使用户阻挡来自骚扰者的电话。

Such schemes can be considered a type of block multithreading among the user program thread and the interrupt threads.

这些计划可以被看作是一种类型的块多线程之间的用户程序线程和中断线程。

The user would select a block of text and then click on an icon to see a list of activities.

用户可以选择一个文本块，然后点击一个图标查看activities的列表。

The first block performs some initialization, then retrieves the contents from the cart , asking the user to confirm the contents.

第一个块完成一些初始化工作，然后检索购物车的目录，并请求用户确认目录。

The following sub section steps a user through the creation of an IBM Cognos Report Studio template which sets the background color of the title block.

以下小节逐步指导用户创建一个IBM Cognos Report Studio模板，设置标题栏的背景色。