For example, a database connection component may choose not to query the database at design time.
例如，数据库连接组件可能不会选择在设计时查询数据库。
The Component connection status will display connected or Not connected based on the network status.
基于网络状态，组件连接状态会显示为连接或未连接。
A networking component can fail to start when the connection is refused.
当连接被拒绝时，网络组件会无法启动。
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