A service requestor is a Network node that discovers and invokes other software services to provide a business solution.
服务请求者是一个网络节点，它发现并调用其它的软件服务来提供商业解决方案。
The secondary node is promoted to primary if the clustering solution detects that the primary node is down.
如果集群解决方案检测到主节点故障，辅助节点升为主节点。
Node becomes an important cog in the solution to this problem.
Node成为这个问题的解决方案的重要一环。
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