In fact, you might want to bundle up the code you write to handle data source configuration and connection into a utility class (that's left for you as an exercise).

实际上可以将处理数据源配置和连接的代码打包成一个工具类(留给读者作为练习)。

youdao

There's a bit of code duplication in the Person class, but I'll leave that for a later refactoring exercise.

在person类中有一些重复的代码，但我把它留给稍后的重构练习。

youdao

The one mandatory speech class became an exercise in rote memorization.

唯一的一次强制演讲也成了机械背诵练习。

youdao

The exercise was also useful in that the data mining class includes both business students and those from the university's engineering department, among them graduate computing student Rosskyn Dsouza, who gained some new commercial insights.

CNN: Doggedly pursuing a business answer

This is a little naive given that the modern securities class action is mainly an exercise in getting a case past the motion to dismiss and only a handful of cases have every gone before a jury.

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Led by a video projected on to a whiteboard nine children, a mix of Latinos and African-Americans, walk or jump on the spot, swing their arms, stretch and reach in an exercise class that lasts around 15 minutes.

BBC: Obesity rates fall in Philadelphia