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to make the same; to have the same ...; to be of the same ...
私たちは志を同じくする仲間だ。
We are comrades who share the same aspirations.
立場を同じくした者同士で議論を深めた。
Those who shared the same position deepened their discussion.
彼とは長年にわたり見解を同じくしている。
I have long shared the same view as him.