1640s, "empty" (implied in vacuousness), from Latin vacuus "empty, void, free" (see vacuum (n.)). Figurative sense of "empty of ideas, without intelligent expression" is from 1848. Related: Vacuously.
例句
1. Male models are not always so vacuous as they are made out to be. 男模特儿并不总像人们说的那样愚蠢。
2. She seemed almost to be apart from herself -- vacuous duplicate only. 她似乎几乎与她自身都分离开了 - 仅仅剩下一个空虚的躯壳.
3. We would be satisfied with any draft document, however vacuous. 我们对任何草案都会感到满意, 即使草案的内容非常空洞也无所谓.
4. Both are equally remote and vacuous. 二者都同样是遥远和空虚的.
5. His eyes looked dull, almost vacuous. 他看上去目光呆滞, 茫然若失.