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月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
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The PM is an abbreviation for (缩略=) the Prime Minister.