oblivious
adjective uk/əˈblɪv.i.əs/ us/əˈblɪv.i.əs/
（尤指对周围发生的事情）毫不在意的，毫无知觉的，未察觉的
not conscious of something, especially what is happening around you
Absorbed in her work, she was totally oblivious of her surroundings. 她专心于工作，对周围的一切毫无知觉。
The mayor seems oblivious to the likely effects of the new legislation. 市长似乎根本没有意识到新法规可能带来的后果。