Definition
Used to describe something so remarkable or extreme that it is hard to believe without seeing it.
表示某事極端到難以置信，必須親眼見證才能相信。
The chaos he described in that place has to be seen to be believed.
他描述的那個地方的混亂情況必須親眼看到才能相信。
The special effects of that performance have to be seen to be believed.
那場表演的特效必須親眼看到才能相信。
Her garden is so beautiful that it has to be seen to be believed.
她的花園如此美麗，必須親眼看到才能相信。