dà / jiā / yì / qǐ / nǔ / lì / gōng / zuò / zhōng / yú / áo / guò / le / zuì / jiān / nán / de / kǔ / rì / zi

大家一起努力工作，终于熬过了最艰难的苦日子。

By working hard together, everyone finally got through the most difficult times.