两组都进行了为期一个月的训练，每周训练五次，每次15分钟。
Both groups trained for one month, five times a week for 15 minutes per session.
从数据源(数据库或文件系统)加载数据十分低效，若是每次想要访问该信息时都运行相同的查询，就尤显低效。
Loading the data from your data source (database or filesystem) is inefficient, especially if you ultimately run the same queries every time you want to access the information.
每次我打电话去催，他们都告诉我已经好了，过五分钟我就可以出院了。
Each time I call again, I am told it has been done and I will be out in five minutes.
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