不管不顾 meaning in English

regardless

And then this guy came along
然后这个家伙不管不顾地闯了过来
Example ： the nervous young man foolishly used to fret over the color of his tie instead of important things like arriving on time for his job interview
这个神经紧张的年青人常常没完没了地担心自己领带的颜色，对面试要准时这么重要的事情却不管不顾。
" let them ! " he answered recklessly . " bring in the whole world . but i refuse to allow that dog to lord it in my nursery for an hour longer .
“让他们听见好啦， ”达林先生不管不顾地回答说， “让全世界的人都来听吧。我可再也不能容忍那只狗在我的育儿室里主宰一切，一刻也不能。 ”