组搜索过滤器。
Subscribe to events that match a particular filter (event group).
订阅与特定筛选器匹配的事件(事件组)。
In general, a group of filter bag has a set of operations organization oscillation.
一般，一组滤袋内有一组振荡组织操作。
The filter applies only to the current group.
筛选只适用于当前的组。
The filter applies only to the current group.
筛选只适用于当前的组。
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