正常工作

• normal operation
• proper functioning
• normal work(ing) (operation; running)

例句

1. 在这项工作中，每人干满正常工作时间。
   On this job everyone works straight-time.
2. 这台空调器正常工作了两年之后突然开始出毛病了。
   After working well for two years the air conditioner suddenly started kicking up.