这里应该是一种无所谓的口气,表示自己不在乎,不怕的感觉,我觉得我会用whatever
口语化一点的话,美剧里一般这么说:【What the hell!】希望帮助到你!
Whatever,I don't care./I'm not afraid.
In spite of xx,I am not be fear
Whatever,I don't care