一些常用的拓展，包括一些高版本特性在 .net standard 2.0 上实现
本项目仍处于开发阶段，存在部分已知和未知 BUG，后续接口可能会有修改，不建议用于生产环境。
This project is still under development and contains some known and unknown bugs. Future interfaces may undergo changes, so it is not recommended for use in production environments.