阿森纳近9次对比利时球队保持不败，上次失利还是1981年10月（阿森纳对比利时球队近9战保持不败，上一次告负可追溯至1981年10月）

Analyzing Arsenal's losses

The user's statement indicates that Arsenal's last loss was in October 1981, suggesting there was a loss that year but none since. I wonder which match it could be—perhaps the UEFA Cup against KSC Lokeren or facing Winterslag, who famously knocked Arsenal out in 1981? Yes, “Winterslag shock Arsenal” comes to mind, likely in November 1981.

The statement about being unbeaten against Belgian teams for the last nine matches might connect to their match against Anderlecht in 2001 during the UCL second group stage.Recalling Arsenal's matches

Let me check my memory on Arsenal’s matches: in the 2000-01 group stage, they had Lazio, Shakhtar, and Sparta Prague, and not Anderlecht. In 2001-02, there were Schalke, Panathinaikos, and Deportivo, but still no Anderlecht. In 2014, there were indeed two matches against Anderlecht, a win and a draw. I remember victories against Standard Liège in 2009 and in 2019 too.

I believe the user noted nine matches unbeaten against Belgian teams, and I need to clarify my calculations and add matches to get the correct total, including the earlier 1970 game.Clarifying match history

The phrase "近9次" means the last nine matches overall, not just since 1981. I realize the last nine matches since 2009 include six noted before, leaving three more to find. It might include the two 2001 matches against Anderlecht. However, after checking, I see that Anderlecht was actually grouped with Manchester United that season, not Arsenal. It seems my memory about Arsenal playing them in 2001 might be faulty—perhaps it was Leeds instead. So, the nine matches appear to be from 2009, 2014, and 2019, along with earlier wins from 1970.Seeking clarification on user needs

With some uncertainty, I think it's best to ask a clarifying question to the user. Do they want verification, context, a stat card, or a source? I could keep it concise by asking if they want a match list or a source link.

Also, I could provide a factual summary about Arsenal's unbeaten record against Belgian teams, noting that the last loss was in 1981 against Winterslag. I should keep it short and concise in Chinese while offering to list the matches as well.