imperceptible
US /ˌɪm.pɚˈsep.tə.bəl/
UK /ˌɪm.pɚˈsep.tə.bəl/
形容词
1.
难以察觉
unable to be noticed or felt because of being very slight:
示例:
•
She heard a faint, almost imperceptible cry.
在 Lingoland 学习这个单词
难以察觉
unable to be noticed or felt because of being very slight: