For many sites, a sitemap is simply a way of being friendly to robots such as search engines.

对于很多站点，提供站点地图只不过是对诸如搜索引擎这类自动机制的支持和友好。

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Robots may query human controllers at remote sites for the go-ahead to fire, and friendly forces may carry transponders that identify them as "friends".

机器人可以向遥远的人类控制员请求前行、开火，友军会携带识别敌友的转发器。

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No one knows for certain, but most people think that robots will be part of our lives. Will they be friendly or unfriendly?

没有人确切地知道，但是大多数人认为机器人会成为我们生活的一部分，他们将会很友好还是不友好呢？

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In order to become part of our daily lives, robots will need to be friendly, simple, and robust.

CNN: Why robots are ready for takeoff

While domesticated robots are becoming a ( frighteningly) common inclusion in techno-friendly homes, Korean 'bot manufacturer ED has a home-ready robot that sports a plethora of communication venues including ZigBee and RFID.

ENGADGET: ED unveils programmable, home-serving U-ROBO bot with RFID