1. He has that je ne sais quoi that distinguishes a professional from an amateur.
他有那种难以言表的特质,体现出他是专业而非业余的。

《牛津词典》

2. If they are both bad, she comforts herself that she has graces; a certain manner; a 'je ne sais quoi, ' still more engaging than beauty.
假如她的容貌和身材都不好,她就会相信自己具有魅力,具有某种“难以描述的”、比美貌还要迷人的风度。

来自互联网

3. If they are both bad, she comforts herself that she has graces; a certain manner; a 'je ne sais quoi, ' still more engaging than beauty.
假如她的容貌和身材都不好,她就会相信自己具有魅力,具有某种“难以描述的”、比美貌还要迷人的风度。

来自互联网