adj.难下定义的,难确切表达的,神秘的,不可思议的
There was something indefinable in her eyes.
她的眼神里有种难以确定的东西。
She has that indefinable something that makes an actress a star.
她具备了那种使演员成为明星的说不出的特质。
His head felt lighter in some indefinable way.
他的头不知为何有点晕眩。