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but; however; (and) yet; nevertheless; still; for all that
彼は確かに優秀だ。だが、傲慢すぎる。
He is excellent. But he is arrogant.
雨だった。だが、試合は続いた。
It was raining. But the game continued.
難しい。だが、やる価値はある。
It's difficult. But it's worth doing.