imperceptibly
US /ˌɪm.pɚˈsep.tə.bli/
UK /ˌɪm.pəˈsep.tə.bli/
副词
不知不觉地
in a very slight way that a person is unable to notice or feel:
示例:
•
Gradually, almost imperceptibly, her condition had worsened.
不知不觉地
in a very slight way that a person is unable to notice or feel: