... 上课时间school hours 一节课时间duration of a period 会议；上课时间；学期 session ...
双语例句
1
Business processes can execute their activities in sequence or in parallel, over a very short periodof time, or a much longer duration spanning days, weeks or longer.
Whereas the cache API is designed to cache data for a long period or until some condition is met, per-request caching simply means caching the data for the durationof the request.
The duration datatype specified in the XML Schema 1.0 Datatypes Recommendation (see Resources) is a partially ordered type that represents a periodof time.
XML Schema 1.0 Datatypes Recommendation（参见 参考资料）中指定的 duration 数据类型是一个半序类型（partially ordered type），表示一个时间段。