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to be tied together; to be connected to; to be linked to
to lead to; to be related to
to be related (by blood)
この川は海につながっているそうだ。
This river apparently connects to the ocean.
人と人のつながりが社会を支えている。
Connections between people support society.
地下鉄の路線が空港までつながる予定だ。
The subway line is planned to extend to the airport.