Definition
This idiom expresses the idea that one will only believe something if they have seen it themselves, especially if the thing is unusual or unexpected.
眼見為憑
I never believed in ghosts until I saw one myself; seeing is believing.
我從不相信鬼魂，直到我親眼看到；眼見為憑。
She claimed she could levitate a pencil. I didn’t believe it, but seeing is believing. She actually did it.
她聲稱她能讓鉛筆漂浮。我不相信，但眼見為憑。她真的做到了。
I had heard that the food at this restaurant was delicious, but seeing is believing; I only truly believed it after tasting it myself.
我聽說這家餐廳的食物很美味，但眼見為憑；我只有在親口品嚐後才真正相信。