We "stop" work sometimes at 5 pm, but then we spend the night wrestling with solutions to work problems, talking about our work over dimer, and falling asleep thinking about how much work we'll do tomorrow.
2018年12月六級真題（第一套）閱讀 Section B
柯林斯高階英漢雙解學習詞典釋義
N-COUNT
The PM is an abbreviation for (縮略=) the Prime Minister.