normal operating period

• 正常工作时间

normal operating period的用法和样例：

例句

1. Even though he is a casual worker,he works a normal work weekly.
   虽然他是一个临时工，每周也做满正常工作时间。
2. Enclosed is an important leaflet highlighting local service telephone numbers for use during normal working hours.
   附上一张重要的活页，着重列有在正常工作时间内可用的本地服务电话号码。