他还发现，蜜蜂能数到五，于是训练它们在一天的特定时段前往喂养站。
He also found that bees can count to five, and trained them to visit feeding stations at specific periods of the day.
还可能存在有关在每天的特定时段使用打印机的规则；或许会考虑连夜在特定的打印机上打印敏感材料。
There could also be rules about the use of printers at certain times of day; perhaps there are concerns about leaving sensitive materials on certain printers overnight.
通过在FORPORTION OF business_time子句中指定时间范围，您可以删除与特定业务时段相关的数据。
You can delete data pertaining to specific business time periods by specifying the time range in the FOR PORTION OF BUSINESS_TIME clause.
在特定时段内只收听某电台的非重叠听众总量。
The size of the unduplicated audience that listens exclusively to one station within some specified period.
在特定时段内只收听某电台的非重叠听众总量。
The size of the unduplicated audience that listens exclusively to one station within some specified period.
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