head down, bum up

短语

发音

AU

别名

head down, ass up head down, arse up

释义与例句

adv.
  1. 1.

    Hard at work; preparing oneself to work hard.

    英国 俚语

    Hadn't heard a thing. Hard at work, head down, bum up.

词源

From an assumed position of strenuous work. Compare nose to the grindstone.

来源：wiktionary