You should delete all non-required control inputs and outputs from an activity.

您应当删除活动中所有的非必需控制输入和输出。

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In the examples, you'll retrieve contacts from a user's address book, add new contacts, modify and delete contacts, and control the data returned in a contact feed.

在这些例子中，您将从用户的地址簿中检索联系人、添加新联系人、修改和删除联系人，以及控制联系人提要中返回的数据。

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At a finer level, the ability to control who can reboot a VM, who can add capacity to an existing VM environment, and who can delete existing virtual machine instances is important.

在更精细的级别上，能够控制谁可以重启vm，谁可以向现有的VM环境添加容量，以及谁可以删除现有的虚拟机实例，这也是很重要的。

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The rest of the device is a plastic, candy-bar-style affair with USB, HDMI and 3.5mm audio outputs on one side, with a gain control, delete button and full-sized SD card slot on the other.

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"Overcautious customers tend to disable Poproxy manually in the Task Manager (accessed by hitting Control-Alt-Delete in Windows), others get weary of the program and decide to block it when their personal firewall reports that Poproxy is trying to connect to the Internet, " said Van der Grift.

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"Internet users must have effective control of what they put online, and be able to correct, withdraw or delete it at will, " said Viviane Reding, Europe's digital rights commissioner, two months ago.

BBC: Google fights Spanish privacy order in court