Old English weorcdæg, from work (n.) + day (n.). The modern word is perhaps a Middle English re-formation. As an adjective (c. 1500) it has generally only the literal sense (compare workaday).
实用例句
1. 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。
来自柯林斯例句
2. When he left the office, that was it, the workday was over.
