head down, bum up

副词 adv.

英文释义

副词 adv.
  1. Hard at work; preparing oneself to work hard. UK,not-comparable,slang
    — Hadn't heard a thing. Hard at work, head down, bum up.

词形变化

head down, ass up alternative head down, arse up alternative

词源

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