音标: 英 ['ʌn'nəʊtɪsəbl] 美 [ʌn'noʊtɪsəbəl]
1. Like, once you notice it, you can't unnotice it.
一旦你注意到它 就很难忽略它了
2. His method of ingress and egress is quiet and unnoticeable.
他进出作案现场时都安静而低调
