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connection; relation
地域住民の結びつきが災害時に力を発揮した。
The bonds among local residents proved their strength during the disaster.
両社の結びつきは長年の取引関係に基づいている。
The connection between the two companies is based on years of business dealings.
食文化と風土の結びつきについて論文を書いた。
I wrote a thesis on the connection between food culture and local climate.