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immediately; right away; at once; instantly
すぐに戻りますから。
I will be right back.
電話が来たらすぐに出てね。
Answer the phone right away when it rings, OK?
道に迷ったがすぐに正しい方向が分かったので助かった。
I got lost, but I quickly found the right direction, which was a relief.