work day

名词 work day:

1. a day on which work is done
   同义词：workday, working day
2. the amount of time that a worker must work for an agreed daily wage
   同义词：workday, working day

1. He kept banging away at his work day by day, until eventually the project was finished.
   他天天孜孜不倦地埋头苦干，直到工程竣工为止。