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just then; at that time; at that moment
as it's a time of ...; in this time of ...
折からの雨で試合が中止になった。
The match was canceled due to the rain at that time.
折からの寒さで風邪をひいた。
I caught a cold because of the cold at that time.
折からの急な予定変更に驚いた。
I was surprised by the sudden change of plans at that moment.