英语语法分析

It has good features and provides expandability options.

它具有优良的功能，并提供可扩展性的选择。

Expandability: the degree to which the design of a system can be extended.

扩展性：一个系统设计方案能够被扩展的程度。

The system has strong expandability, high feasibility of technique and economical.

本系统具有很强的扩展性、很高的技术可行性和经济可行性。