oblivious

/əˈblɪv.i.əs/
not aware of sth 不知道；未注意；未察觉

~ (of sth)
He drove off, oblivious of the damage he had caused.
他驾车而去，没有注意到他所造成的损害。
~ (to sth)
You eventually become oblivious to the noise.
你终究会变得不在意吵闹声的。