Photato(Photogenic Potato) refers to someone that looks good in a photo, but looks ugly in person.
上鏡的土豆指的就是那些本人長得并不出眾,卻很上鏡的人。
She might be someone with a small face, or a slim body, or someone who is relaxed with the camera. All those factors could make her look more beautiful in the photo than she actually is, which makes us jealous.
也許她擁有一張小臉,也許她身材苗條,也許她面對鏡頭很放松……這些都能讓她鏡頭上比本人更漂亮,也讓我們更嫉妒。
Example:
That girl is such a photato. If only she was as good looking in real life, as she was in her Facebook photos.
那個女孩就是個上鏡的土豆。要是她真人和她Facebook上的照片一樣好看就好了。