“方便性”常见的英文表达是 convenience 或 conveniency(较为传统或少见),其中 convenience 使用更为广泛。
The location of the new supermarket offers great convenience to the residents. (新超市的位置给居民带来了极大的方便。)
This new design emphasizes both functionality and convenience for users. (这一新设计既强调了功能性,又注重了用户的方便性。)