利用该键，您可丢弃组成员、阻塞或者取消阻塞来自特定地址的数据报、以及返回有关组和通道的消息。

Using the key you can drop the membership, block and unblock datagrams from certain addresses, and return information about the group and channel.

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键返回文档中具有该地址值的所有列表。

The key returns all listings in the document with that address value.

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现在，你可以试着在地址栏输入关键字，然后按下回车键，进入该网站。

Now, you can enter the keyword into the address bar and press enter to the access the website.

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