关于你之前说的，我想问你一些事情。

I'd like to ask you something ___in ___relation ___to what you said earlier.

关于上个月的社交活动，伦敦的观光之旅非常棒，尽管我们没有看到整个城市。

___In ___relation ___to last month's social program, the sightseeing tour of London was divine, although we didn't get to see the entire city.

政府正在审查关于经济增长的政策。

The government is reviewing policies ___in ___relation ___to economic growth.