如果您对此已经很熟悉，则可转到下一主题，强化应用结构。

If you are already familiar with NLS, skip to next topic, Enhancing the application structure.

youdao

如果您对此已经很熟悉，则可转到下一主题，强化应用结构。

If you are already familiar with NLS, skip to next topic, Enhancing the application structure.

youdao