Note that the isgd method logs any attempt to shorten an invalid URL.
注意，isgd方法将记录任何企图缩短一个无效url的日志。
In the case that an invalid URL mapping is used, the user is also directed to the default virtual portal.
在使用无效url映射的情况下，用户也被定向到缺省虚拟门户。
In the case that an invalid URL mapping had been used, the user is directed to that "default" virtual portal as well.
对于使用无效url映射的情况，也会将用户定向到该“缺省”虚拟门户。
You can use image buttons for many purposes, although they do require you to develop images. If you want to bypass this, create an image button with Alt text and an invalid URL for its image.
可以将图像按钮用于许多用途，但是这要求您开发图像。
As the example shows, the third slice points to an invalid database URL.
正如本例所展示的，第三个片指向的是一个无效的数据库url。
One of the most important tools provided in GWT is the Remove URL tool, which allows you to remove invalid pages from Google search results.
GWT的网址删除工具，可以从Google搜索结果中移除无效页面。 下面是具体步骤说明。
One of the most important tools provided in GWT is the Remove URL tool, which allows you to remove invalid pages from Google search results.
GWT的网址删除工具，可以从Google搜索结果中移除无效页面。 下面是具体步骤说明。
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