In fact, we could go further and say that were not alive as all life reacts to its environment, by definition, and to react you must therefore be able to perceive.
事实上，我们能进一步说，他们已经不在人世，因为从定义上讲，一切生命都会对周围环境做出反应。而要做出反应就必须能够感知。
A virtual search agent could use Web servers and HTTP interfaces to both perceive and manipulate the environment (the Internet) and a console as an effector to communicate with a user.
而虚拟搜索代理则可以使用Web服务器和HTTP接口来感知环境(Internet)并对环境进行操作，并使用一个终端作为效应器来与用户进行通信。
A virtual search agent could use Web servers and HTTP interfaces to both perceive and manipulate the environment (the Internet) and a console as an effector to communicate with a user.
而虚拟搜索代理则可以使用Web服务器和HTTP接口来感知环境(Internet)并对环境进行操作，并使用一个终端作为效应器来与用户进行通信。
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