man-hour

• 1. 

  N-COUNT A man-hour is the average amount of work that one person can do in an hour. Man-hours are used to estimate how long jobs take, or how many people are needed to do a job in a particular time. 工时

  例：

  The restoration took almost 4,000 man-hours over four years.

  这项修复工作大概用了4000工时，历时4年。