vacuous

形容词

1. 1

   空洞的、肤浅的、无意义的贬义

   His speech was full of vacuous promises about the future.

   他的演讲充满对未来的空洞承诺。

2. 2

   呆滞的、茫然的、无神的指表情、眼神

   She stared at the wall with a vacuous expression.

   她用呆滞的表情盯著墙壁。

3. 3

   空的、真空的正式

   The instrument measures pressure inside a vacuous chamber.

   这个仪器测量真空室内的压力。