不相信自己的耳朵(或眼睛);对所闻(或所见)非常吃惊
not believe your ears / eyes
to be very surprised at sth you hear / see
I couldn't believe my eyes when she walked in.她走进来时我简直不相信自己的眼睛。
释义来自《牛津高阶英汉双解词典》第 9 版