可是 和 但是 的差別在哪裡？如果不好說明，請提供一些例句。
They're totally the same^^
(however, you can say 但 for short and it won't change the meaning at all, but you can't only say 可),但是is more heavy than 可是
(however, you can say 但 for short and it won't change the meaning at all, but you can't only say 可),但是is more heavy than 可是
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