a bit of fluff
一个没用的人或物，特别是指与某人有短暂而不重要的感情关系的人
口语·轻蔑形容外表好看但无内涵的人
英文释义
a person, especially a woman, who is considered to be attractive but not very intelligent or interesting
例句
She's not just a bit of fluff; she's actually a brilliant scientist.
典故来源
源自20世纪俚语，原指轻浮无用的东西，后多用于贬低女性外表或智力。