When is it valid to access a pointer to a "dead" object?
当它是有效的访问一个指向一个“死”的对象？
Is it still valid to assume it is more expensive to design a scalable system?
设计一个可伸缩的系统更加昂贵，这个假设是否仍然成立？
These would be perfectly valid reasons to choose one software platform over another.
对于取舍一个软件平台这可能是完全有效的理由。
Each instance will be migrated to its own current valid version.
每个实例将被迁移到其当前有效的版本中。
Enter a valid username and password in the login page to visit the index page.
在登录页面中输入有效的用户名和密码以访问索引页面。
For a given event, you use conditions to determine the new valid state.
对于一个给定事件，使用各种条件来决定新的有效状态。
This implies the element is required for the person element to be valid.
这表示人员元素必须有这个元素才是有效的。
In case the area is currently valid, this value is set by default to 9999.
就目前有效的地域而言，这个值的缺省是至9999年。
Another way to test it is to verify that the feed is valid.
另一种测试方式是验证提要是否有效。
This will cause the event to become valid again.
这会让事件再次有效。
In this case, the policy is set to be valid for one day, or 86,400 seconds.
在本例中，策略被设置为一日内有效，即86,400秒。
You can also test whether a user-space pointer is valid through a call to access_ok.
您也可以通过调用access_ok来测试用户空间指针是否有效。
It would also be useful to define a valid range for an int value.
而且，为一个int值定义一个有效范围也很有用。
Check: check to see whether the database is valid.
check：查看数据库是否有效。
To do this, you need to create a valid request.
要执行此操作，您需要创建一个有效的请求。
A valid GWT application, but how to test it?
一个有效的GWT应用程序，但是如何测试它？
What must this experiment have the potential to do, to be a valid scientific experiment?
实验必须有做什么的能力,才能被称为一个有效的科学实验呢？
Therefore, as shown in Figure 7, a valid username and password need to be provided.
因此需要提供一个有效的用户名和密码，如图7 所示。
The second is to require a valid authentication key.
第二个方法要求使用一个有效的认证密钥。
First and foremost, a valid page is going to display properly.
第一个且最重要的是，有效页面将会正确显示。
I'll create a new rule to ask for a list of valid states.
我需要创建一个新的规则获取有效状态列表。
That's a valid reason to create a new branch.
这就是建立新分支的一个合理原因了。
What about when you fail to log in with valid credentials?
使用有效凭据而未能成功登录时又是怎样？
I only had to write a validation method to ensure the price was valid.
我只有必须编写验证方法，确保价格是有效的。
Valid instance documents for the same message look strikingly similar to each other.
同一消息的有效实例文档看起来都惊人地相似。
This is certainly a valid concern to be addressed by the protocol author.
这当然是协议作者要解决的一个问题。
The question of how to monetize doing what you love is certainly a valid one.
怎样金钱化你喜欢做什么的问题是正确的。
The ideal is to be able to consider all of these perspectives as valid.
理想是所有这些观点都是合理的。
Note: Make sure to enter a valid value in this field.
注：请确保输入的值是有效的。
When you've got a valid page, you need to lock that version in.
具有有效的页面之后，需要将此版本锁定。
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