1 . 真空的
vacuometer 真空计vacuous真空的vacuscope 真空仪
2 . 感到空虚的
mars写作素材库:老年人口问题 ... negative mentality 消极心态 vacuous感到空虚的 aged diseases 老年病.
3 . 空虚的
vacuometer 真空计vacuous空虚的vacuum bottle 热水瓶
4 . 无意义的
equipoise←→vacillatevacuousadj.发呆的,无意义的,空的,空虚的,心灵空虚的marked by lack of ideas or intelligence:STUPID, IN.