If the user is logged in, he is obviously a user.
如果用户已登录，那么它显然就是一个用户。
What if the user hits the browser backbutton?
如果用户点击了浏览器的后退按钮有会怎么样？
Note the redirection if the user is not logged in.
注意，如果用户未登录则会重定向。
But what happens if the user has successfully logged in?
但是如果用户成功登录后会发生什么呢？
If the user enters a comment, then COMMENT_ENTERED is True.
如果用户输入一个注释，那么COMMENT_ENTERED为真。
But what if the user uploads something other than an image?
但是，如果用户上传其他东西，而不是图像呢？
If the user does not specify a title, a safe title is provided.
如果该用户没有指定标题，就提供一个安全标题。
This information is only accessible if the user isn't protected.
这个信息仅当用户不受保护时才允许访问。
If the user closes his browser window, the session also ends.
如果用户关闭浏览器窗口，会话也会结束。
If the user cannot be authenticated, then the RP denies access.
如果用户得不到验证，rp会拒绝任何访问。
In addition, the error window is not reopened if the user closes it.
此外，如果用户关闭了错误窗口，该窗口将不再重新打开。
If the user actually changes anything, the data is saved using that ID.
如果用户更改了任何内容，数据就使用该ID保存。
If the user clicks a thumbnail, the image will expand to full size.
如果用户单击一个缩略图，就会完全展开该图像。
How many interruptions do you provide if the user doesn't get involved?
如果用户不参与，提供多少中断？
If the user is logged in, it returns a successful authentication message.
如果用户已经登录了，它返回一个成功的身份验证消息。
Apache automatically sets REMOTE_USER if the user has been authenticated.
如果用户已经过身份验证，则Apache会自动设置REMOTE_USER。
If the user chooses a date, and then clicks OK, the command returns 0.
如果用户选择一个日期，然后单击ok，命令返回0。
If the user is signed in, then the locale is specified in the user profile.
如果用户已登录，则使用用户概要中指定的区域设置。
Wouldn't it be great if the user could see more information about a giraffe?
如果用户能看到关于长颈鹿的更多信息，岂不是更好吗？
If the user clicks OK, the second simple action runs, executing the script.
如果用户单击ok，则运行第二个简单操作，执行脚本。
This means that the property page is visible if the user clicks on a project.
这意味着，如果用户单击项目，就能看到属性页。
If the user attempts to TAB past a mandatory input item, an error message appears.
如果用户想跳过必填的输入项，则会出现一条错误消息。
If the user made changes in edit mode, the changes should be reflected in view mode.
如果用户在编辑模式中进行了更改，则这些更改应该反映在查看模式中。
For really creative malicious hackers, the sky is the limit if the user trusts them.
对于真正创造性的恶意黑客，若是用户信任他们，那么他们的目的总是会达到。
The following routine is only executed if the user double-clicks a calendar date.
下面的例程只有在用户双击一个日程表日期时才会执行。
I suggest that it is only good policy if the user can remember their own password.
我认为，只有在用户能够记住自己的密码的前提下，这才是好策略。
It assumes that if the user can prove his identity then he is allowed to register.
它假定用户能证明其身份从而可以进行注册。
It's also difficult to change if the user wishes to receive more or less than 15 items.
如果用户希望接收多于或少于15个项时，也很难进行更改。
The sample application automatically grants access if the user is authenticated by the OP.
如果用户通过了OP的身份验证，示例应用程序会自动地授予访问权。
If the user role is not what was expected, then we redirect the user to an error page.
如果这个用户角色不是我们预期的，就会把用户重定向到一个错误页面。
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