追踪讯息是由预设追踪接听项所撰写。
The trace messages are written by the default trace listener.
这个技术会建立事件来源对事件接听项的强式参考。
This technique creates a strong reference from the event source to the event listener.
程序码本身就会产生写入到预设追踪接听项中的追踪讯息。
The code alone results in the trace messages being written to the default trace listener.
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