All the data and materials come from real practices, which are very helpful for practice.

本文中的所有数据和资料均来源于实践，从而对实践具有很高的指导价值。

youdao

All the data and materials come from real practices, which are very helpful for practice.

本文中的所有数据和资料均来源于实践，从而对实践具有很高的指导价值。

youdao