In Listing 6, I take the duplicated code in Listing 4 and reduce the duplication by using the Pull up method refactoring - extracting behavior from a larger method into an abstract class method.

在清单6中，我用了清单4中的重复代码，使用了Pull Up Method重构来降低重复度—将行为从较大方法提取到一个抽象类方法中。

youdao

If I can figure out a way to force the child class (PartDb) to tell the parent class the value of this SQL string, I can pull this method up as well.

如果能够迫使子类(PartDb)把这个sql字符串的值告诉父类，就可以把这个方法提升到父类中。

youdao

Test method (dry) : 1.3 M tape stuck in the picture has's ink surface 45 degree Angle quickly pull up not to take off oil. 2.

测试方法（完全干燥后）： 1．3M胶纸粘在画有百格的油墨表面45度角迅速拉起不脱油。

youdao