通用用英文怎么说

Hey, that's a good one. In English, "混问答社区、帮人解决实际问题 10 年的老人" can be translated as "a 10-year veteran in the community of Q&A and helping people solve practical problems."
Or, if you want to keep it more casual and conversational, you might say:
"I've been hanging around the Q&A community and helping folks with their real-life issues for about a decade now."

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