物件运算式，可让您在需要时于运算式中隐含定义小型物件，而不用宣告新型别以及具现化物件。
Object expressions, which enable you to define small objects implicitly in expressions as needed, instead of declaring a new type and instantiating an object.
对于这些场景，可以使用一种技巧来解决这种隐含的集群大小限制，那就是定义一个超级集群或“集群式集群”的拓扑结构。
For these scenarios, one technique that can be used to overcome the implicit cluster size limit is to define a super cluster or "cluster-of-clusters" topology.
其次，所有定义中都隐含或者明确指出需要一台服务器。
Second, a server is either implicitly or explicitly indicated in all of the definitions.
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