代理的URI应该为静态的，一旦被发现，客户机通常就可以跨多个服务调用可靠地使用它。
The broker's URI should be stable; once it has been discovered, the client can generally use it reliably across multiple service invocations.
微笑可以被发现、描述并且可靠地被识别出来，在一定的实验条件下，它。
A smile can be observed, described, and reliably identify, it can also be elicited and manipulated under experimental conditions.
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