出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第83页（227字）
比喻神思不定，心中慌乱、不安，例最近频传飞机失事，使得她一上飞机心里就七上八下，坐立难安。
With so many recent air accidents，she felt rather agitated when she first stepped on to the plane and had difficulty settling down．