我希望继续由configuration类来完全维护项阵列，以便在添加其他子类后，那些类将不需要知道如何维护项阵列。

I'd rather have the Configuration class continue to maintain the items array completely so that if I add other descendants, those classes won't need to know how to maintain the items array.

youdao

这给了我非常快速、易于维护、完全程序化的方法来将内容注入PDF。

This gives me a very fast, easily maintained, fully programmatic way to pour content into PDF.

youdao

对于差异备份，需要维护自上次完全备份以来采取的所有备份，以便能够重构数据。

For a delta backup, you need to maintain all the backups taken since the last full backup in order to be able to reconstruct the data.

youdao