不定期的
6.In addition, the various prefectures, cities and counties hold mass theatrical festivals from time to time to promote popular cultural activities. 
7.Students will submit occasional works via e-mail, including critiques of readings and some hands-on analyses of Creole data.
8.Generally speaking, industrial business, current production cost is written down current in cost, nonsked also the cost first is met prep above is the following cost, should be the cost of apportion is high when the meeting is more than the sale when the sale is little.
9.In accordance with the law, the reform-through-labour institutions regularly or from time to time recommend to the People's Court that selected prisoners have their sentences reduced or be released on parole, based on their overall conduct while undergoing reform.
