imperceptibly
adverb uk/ˌɪm.pəˈsep.tə.bli/ us/ˌɪm.pɚˈsep.tə.bli/
察觉不出地，难以察觉地
in a very slight way that a person is unable to notice or feel
Gradually, almost imperceptibly, her condition had worsened. 几乎是在不知不觉中，她的病情逐渐地恶化了。
The glacier is an imperceptibly slow-moving river of jagged ice. 冰川是一条在极其缓慢地移动的锯齿状冰河。
See: imperceptible
- More examples
- The ground moves imperceptibly even on days when there isn’t a significant earthquake.
- His right eye is almost imperceptibly larger than the left.
- Almost imperceptibly, her questions turned into suggestions.