n.工具箱,针线盒
His workday starts at 3.30 a.m. and lasts 12 hours.
他凌晨3点半开始工作,一直持续12小时。
What's he doing home on a workday?
该上班的日子,他在家干什么?
When he left the office, that was it, the workday was over.
他一离开办公室,就此打住,一天的工作就结束了。