影视英语口语:埋头苦干

“埋头苦干”在英语口语里能怎么说？

初级口语：work hard
高级口语：neck deep

素材来源：《识骨寻踪》
剧情简介：Angela敞开了衣裳以引起机场工作人员的注意好询问飞自危地马拉的飞机何时抵达。刚下飞机的Brennan正好撞见，哭笑不得，随即身为好友的Angela关切地询问Brennan有没有在危地马拉找乐子……

【台词片段】
Angela: Oooh. Are you exhausted? Was Guatemala awful? Was it horribly backward?
Bones: And yet I was never reduced to flashing my boobs for information.
Angela: Flash em for any fun reasons?
Bones: I was literally neck deep in a mass grave. Not romantic.
Angela: Y’know diving head first in a pit of cadavers is no way to handle a messy breakup.
Bones: Angela, nothing Pete and I ever did was messy.
Angela: Then you were not doing the right thing.