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to run into; to collide with; to crash into; to bump against
to come to the end of (a street)
to run into (difficulties, problems, etc.); to run up against
この道をまっすぐ行くと突き当たりに壁がある。
Go straight and you'll hit a wall.
この道は行き止まりに突き当たる。
This road ends at a dead end.
計画を進める中で予想外の問題に突き当たった。
I ran into a problem at the intersection.